Why Would You Do That: AI takes actions that have no (meaningful) effect

The AI sometimes takes actions that don't affect the board state, but cost time or resources, even when better actions that would affect the board state are also available. This should be avoided.

Since these types of issues can be intermittent or difficult to reproduce - and are also low priority - I'm just combining them all into one tracking issue, rather than testing to see which still occur. Some issues listed here may already be fixed.

- [ ] AI with two Kiora's Followers will just use them to untap each other #1167

- [ ] AI will tap and untap Basalt Monolith repeatedly #2023

- [ ] AI crews vehicles in second main phase (and even when summoning sick) #4166

- [ ] AI casts pump spells on its creatures when nothing threatens them and they cannot attack #4458

- [ ] AI taps creature lands to pay for their own cost of activation #5615

- [ ] AI re-activates creature lands that are already animated (i.e. Mishra's Factory) #5615 #6172

- [ ] AI will bounce the land it just played when playing karoo/bounce lands #5773

- [ ] AI targets indestructible creatures with Dark Hatchling #5778

- [ ] AI casts Astral Cornucopia with X=0 #5894

- [ ] AI re-equips Shining Armor to already equipped creature #6107

- [ ] AI discards cards to pump Vampire Hounds when it can't attack #6118

- [ ] AI uses Thespian's Stage to copy itself #6145

- [ ] AI names colors that haven't been observed in the game with Prismatic Circle #6237

- [ ] AI will regenerate beasts with Krosan Warchief when those beasts are not in danger of dying #6280

- [ ] AI will use Marath, Will of the Wild's ability to take off and return the same counters #6281

- [ ] AI will activate First of the Suns and Jodah, Eternal Archmage to cast already castable spells that cost less than five mana #6358

- [ ] AI will cast Journey to Nowhere and Oblivion Ring without targets on the battlefield #6425

- [ ] AI will pay life to regenerate Marrow Bats when it is not in danger of dying #6587

- [ ] AI will target it's own equipment with Silverback Elder's destroy ability