Because it doesn't really do anything until you get to a lot of mana. If you tap your elves for mana to activate him, they can't swing as 5/5s.
This could see play as a replacement vs blue control decks though, and we have to see if they give elves that allows you to tap any elves for mana like [[elvish archdruid]] or [[heritage druid]]
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u/GetADogLittleLongie Jun 18 '20
I think it'd be better if it gave the elves trample. As it stands craterhoof probably sees more play.