Colossus Hammer Cheap to cast, hard to equip
This goes to show the potency of multimodal cards
Whenever one or more creatures you control enter, if one or more of them entered from a graveyard or was cast from a graveyard, put two +1/+1 counters on Kotis
These "scaling with the amount of times you do 'X' thing" cards are pretty cool, and all of those effects are worth shelling out for
Creatures (5) Lands (14) Spells (41) 4 Brainstorm 1 Fastbond 2 Mana Drain 1 Vampiric Tutor 1 Mystical Tutor 1 Yawgmoth's Will 4 Duress 4 Force of Will 1 Demonic Tutor 1 Time Walk 1 Ancestral Recall 1 Red Elemental Blast 4 Gush 1 Cunning Wish 4 Merchant Scroll 2 Misdirection 1 Black Lotus 3 Opt 1 Mox Emerald 1 Mox Jet 1 Mox Ruby 1 Mox Sapphire Sideboard Gush has been restricted and unrestricted more times than most, and when it has been legal, it has been extremely busted with Fastbond
The Mending of Dominaria is a bit narrower than some other options on this list, though, which explains why its down at number 10