it's your choice
A deck that has a high density of creatures like Elves, Spirits, or Mono Green Aggro uses CoCo to push out threats quickly, surprise an opponents attack with additional blockers, or quickly rebuild an army after a board wipe
The Meathook Massacre can be a one sided board wipe, similar to Toxic Deluge, if your creatures are bigger
This card is an elite reprint that is well worth building around
Displaced Dinosaurs makes every artifact token you make (Treasure, Clues, and Food come to mind) into 7/7 creatures, and its not hard to make a ton of artifact tokens these days, whether Treasure in Golgari or Clues in Simic
Youll also get some doctors back from the graveyard when you cast this 6-mana enchantment