The Pride of Hull Clade - 352 M MKM

This spell costs {X} less to cast, where X is the total toughness of creatures you control.
Defender
{2}{U}{U}: Until end of turn, target creature you control gets +1/+0, gains "Whenever this creature deals combat damage to a player, draw cards equal to its toughness," and can attack as though it didn't have defender.

mythic
Legendary Creature — Crocodile Elk Turtle
From the Magic: The Gathering set Murders at Karlov Manor.