It does take a little bit of time for it to get going as it costs two mana to equip, but once you do, you can ensure you always have the mana to equip it again from all the Treasures it makes
Easy ones to think of here are Jodah the Unifier, The Ur-Dragon, and Tiamat
Clement, the Worrywort Clement, the Worryworts return to hand ability goes on the stack, and then you can tap frogs before bouncing them if theyve been out a turn
Both are big bodies that fly
Not only is Solemn Simulacrum a great MTG mana ramp card, allowing colors that aren't green to cheat out extra lands, it also draws you a card when it dies
In a multiplayer format like Commander, people are going to cast a lot of spells, and they're all going to make Ishai bigger