When you scratch your head and think "How the heck am I going to win with Squirrels?!?", think Overrun, Centaur Chieftain, or even Lure
This mana can't be spent to cast a nonartifact spell.") Sarinth Greatwurm's second ability triggers whenever a land enters the battlefield under any player's control, not just under your control
As it happens, End Hostilities is efficiently costed at only five mana, and even has another important ability to boot: "and all permanents attached to creatures." This means Equipment, Auras with bestow, and other Auras attached to creatures (these would normally die along with the creatures, but it could come up that they're still destroyed if the creature is indestructible or gets regenerated)
Being able to cheat down creatures for free just by swinging is good enough, everything else is just a nice bonus
Its bans and restrictions across formats arent historical trivia theyre a reflection of how quickly it converts a stocked graveyard into inevitability
What I mean by this is that you can customize your Y'shtola decks a number of different ways, all while staying within theme