* refactor check supertype methods
* change supertype to list to match card type
* refactor various subtype methods
* implement mageobjectattribute for supertype
* a few fixes
* [BRC] Implement Rootpath Purifier
* a few extra fixes
* more fixes
* add test for purifier
* add types and subtypes
* add startingDefense attribute
* [MOM] Implement Invasion of Ravnica / Guildpact Paragon
* fix two small errors
* refactor various instances of "any target"
* fully implement defense counters
* battles can now be attacked
* [MOM] Implement Invasion of Dominaria / Serra Faithkeeper
* [MOM] Implement Invasion of Innistrad / Deluge of the Dead
* [MOM] Implement Invasion of Kaladesh / Aetherwing, Golden-Scale Flagship
* [MOM] Implement Invasion of Kamigawa / Rooftop Saboteurs
* [MOM] Implement Invasion of Karsus / Refraction Elemental
* [MOM] Implement Invasion of Tolvada / The Broken Sky
* simplify battle info ability
* fix verify failure
* some more fixes for attacking battles
* [MOM] Implement Invasion of Kaldheim / Pyre of the World Tree
* [MOM] Implement Invasion of Lorwyn / Winnowing Forces
* [MOM] Implement Invasion of Moag / Bloomwielder Dryads
* [MOM] Implement Invasion of Shandalar / Leyline Surge
* [MOM] Implement Invasion of Belenon / Belenon War Anthem
* [MOM] Implement Invasion of Pyrulea / Gargantuan Slabhorn
* [MOM] Implement Invasion of Vryn / Overloaded Mage-Ring
* [MOM] Implement Marshal of Zhalfir
* [MOM] Implement Sunfall
* implement protectors for sieges
* partially implement siege defeated trigger
* fix verify failure
* some updates to blocking
* [MOM] Implement Invasion of Mercadia / Kyren Flamewright
* [MOM] Implement Invasion of Theros / Ephara, Ever-Sheltering
* [MOM] Implement Invasion of Ulgrotha / Grandmother Ravi Sengir
* [MOM] Implement Invasion of Xerex / Vertex Paladin
* add initial battle test
* fix verify failure
* [MOM] Implement Invasion of Amonkhet / Lazotep Convert
* [MOM] update spoiler
* update how protectors are chosen
* update text
* battles can't block
* add control change test
* rename battle test for duel
* add multiplayer test
* [MOM] Implement Invasion of Alara / Awaken the Maelstrom
* [MOM] Implement Invasion of Eldraine
* [MOM] Implement Invasion of Ergamon / Truga Cliffhanger
* [MOM] Implement Invasion of Ixalan / Belligerent Regisaur
* battles now cast transformed (this is super hacky but we need to refactor TDFCs anyway)
* add TODO
* add ignore for randomly failing test
* a few small fixes
* add defense to MtgJsonCard (unused like loyalty)
* implement ProtectorIdPredicate
* small fixes
