mtg cards like craterhoof behemoth #138 Holo from Tarkir: Dragonstorm (TDM) Proxy creatures you control gain trample and get +X/+X until end of turn MTGNexus - Craterhoof Behemoth

Of course, in hydra tribal, even better, but also if you have a deck with clones, clones of the back of Polukranos here will see each other die to trigger multiple times for a geometric amount of hydras

Three mana buys you a full round of safety

At the beginning of your upkeep, if there are 100 or more tower counters on this enchantment, you win the game

(4/17/2020) If the power of the target creature cards change while in your graveyard, most likely because one has a characteristic-defining ability that defines a * in its power, the total power of the creatures may become greater than 10

It still saw some sideboard play, but not much

Then I ran stuff like Aristocrats and sacrifice stuff like Mayhem Devil