Binlor Ironshield is the god of mining. He is found in a subdungeon with an ENDISWAL glyph. Once you mine a few walls, you reach some gold. Don't fall for it, keep mining to reach his altar.
Stone Soup: You get a 0 CP ENDISWAL glyph. If you've prepped Binlor and the map is full of impassible tiles, this can help you with moving around the map. It can also help set up PISORF kills. Otherwise, if you can afford it, you can convert a regular 100 CP ENDISWAL Gylph for CP. There are other tricks to it, and it's still a fully functional ENDISWAL if you need it.
Stone Skin: This is Binlor's main spiking boon. Activating it takes your physical resist almost to the maximum, and also activates the Stone Form buff. If you have taken Stone Form and Stone Fist, each activation of Stone Skin lets you hit for +70% damage at almost the lowest possible health cost against opponents with Physical Damage, as long as you're knocking the opponent into a wall or a monster. If you can keep it up and refill health with, say, potions, or simply have a large enough health pool you can destroy bosses with it even if you have no natural physical resistance.
Stone Form A boon that buffs your damage. It is activated whenever a wall is destroyed, even if this is done by a monster or by the activation of one of Binlor's boons. You can trigger it easily with repeatable uses of Stone Skin, PISORF use, knockback into walls or using the ENDISWAL glyph. The damage boost doesn't stack with BYSSEPS or any other source of Might
Stone Fist Another boon that buffs your damage, provided you're knocking your target into other monsters or walls. You should probably aim for this first, as it allows you to farm piety without using mana. Also synergizes with stone form, provided you didn't remove all the walls.
Stone Heart Removes some resists from revealed enemies. Somewhat situational, but it also triggers Stone Form, and is best used if you need to remove a lot of walls for little piety on cramped maps, or if you plan to just convert out.
All Binlor boons except Stone Soup Provide a small increase of Magic resist. While taking the damage increasing boons is probably always a good idea, if you're looking to use Binlor to get your Magic resist very high, spamming Stoneskins costs fewer walls and can help you fight things and level up if you're not afraid of the punishment. Spamming Stone heart for this purpose costs less piety, but costs more walls, and doesn't help you level.
Binlor removes all your resistances when you desecrate his alter or otherwise anger him. For characters without resistances, this means Binlor can be angered or desecrated freely and he is incapable of actually punishing you. While there are a few cases of characters that can ignore a deity's punishment, this is the only one that actually comes up with any frequency in practice.
There are several ways to play Binlor.
1) Straightforward Melee Guy - Binlor gives out big damage, and is easy to farm piety with. Jump in, use PISORF to farm up the knockback boon (or have knocback by prepping the Bear Mace), then the might boon, mind the punishment as you level up (or desecrate something for a few indulgences), kill the boss with stoneskin spam, or spam stoneskin along the way to get your magic resistance up. If you're naturally resistant, you might not need stoneskin.
It works rather well with Halflings, Orc, Dwarfs, Humans and Half-Dragons, and is really straightforward. The total damage boost is huge, especially if you prep or have Bear Mace, and stoneskin resists mean almost maximum physical resistance for your hits. Otherwise you're bound to accumulate plenty of magic resistance.
In theory it's a bit more complicated to farm piety, avoid the punishment and make sure your damage sticks than using Taurog, but in practice it's quite a bit more powerful and synergizes with more things.
2) Tricky Melee Guy - Same as the simple approach, but what you do is only farm up the damage boons and possibly 100 piety at lvl 1 and swap to another god to level up with no looming punishment, and possibly return back into Binlor for end game stoneskin spam.
Otherwise you can just farm up the damage boons, level up without accumulating any piety at all, get punished a bunch, and then use your remaining exploration and your knockback to get piety for boss fight stoneskin spam. The punishments will knock off your resists, but if you don't have many anyway and stoneskin gives a lot of temporary ones, you don't even mind.
3) Magic Resist Farmer - A very powerful, if somewhat tedious, strategy is to squeeze the map for every last bit of Binlor piety and, after grabbing the damage boons asap, spam stoneskin like mad just to get your magic resistance as high as you can. The Paladin is especially notorious for this because he can't get punished so he can stick in Binlor, but it works with anyone at all. Since Binlor is easy to farm piety with, you can just do this at lvl 1 and swap out into another god with big magic resists, and a lot of conditional damage. You won't have much blackspace, but you might not need it, or you might be playing a map with a lot of late game blackspace (such as many Vicious Dungeons, where this is one of the strongest approaches with several classes).
4) The PISORF:Magnet - Since Binlor gives you the PISORF glyph if he's the first god you worship, anyone looking to use that Glyph will likely prep his altar just for that and probably not need any other boon. You then just go around using your PISORF to get piety while you explore and swap off into another god at either 50 or more piety. Since you don't plan to melee the boss, you can then probably safely desecrate his altar for 30 more piety and 3 indulgences with your new god.
Wizards, Bloodmages, Fighters, Assassins and anyone else looking to use PISORF strat love this.
5) The Piety Farm / Map Hack - Binlor can be prepped (or picked up early on) just for the fact that taking his boons removes walls from the level. This is handy on mazy maps like the Labyrinth even if you never get any use out of his boons or if you're not looking to be a PISORF specialist.
There are two main strategies with Binlor. You can either stay with him, which is only to be done if there are no other gods to convert off to, or the optimal strategy of using him as a piety farm. If you decide to stay with him, just keep using boons to pump magic resistance, the best boon being stone heart, and destroy walls to negate the level up penalties. Save some piety for the endgame. When you're fighting the boss, use stone skin before every hit. This is especially nice if you already have stone form as it will give you resists and might. If you are going to convert off, rack up 100 piety, take 5-10 stone hearts to kill monster resistances, and then rack back up 100 to convert in. Remember, if you are in a level without a lot of walls, don't use too many stone hearts as you might run out of walls to convert.
Binlor also has a strong synergy with attacks that cause knockback, such as if your character is a Half-Dragon or has a Bear Mace. With Stone Form and Stone Fist, every attack in which you can bash the target into a wall will give you Might, piety, and a large amount of knockback damage in addition to your normal attack damage, and the resistances you get from Binlor (or just from destroying walls with ENDISWAL) will help you survive any retaliation. If you take this approach, it's a good idea not to take too many boons from Binlor so that you have enough walls left for your knockback strategy.
If you plan on staying with Binlor, desecrating a Mystera altar is usually well worth the negatives. Since Binlor's only chance of punishing you is a -10 on level up, you effectively earn +55 piety on any desecration. Mystera's punishment is 15% resistances to all enemies, and you can nullify this with 3 uses of Stone Heart (while beefing up your magic resist by 9%). Just make sure you have enough walls to compensate, and that you're not already at a high enough level to waste the punishment invulnerability.
Binlor is an extremely safe deity to convert to in the endgame, if you would otherwise be dealing with an unmanageable amount of piety fines (e.g. a GG worshiper who has a large stock of potions). In this respect, he is second only to The Earthmother. Even if you have no way of generating more piety with him, he can be worth converting to at level 10 for a last-minute boon and a boss fight free of divine restrictions on your behavior.