Jiraiya, Toad Sage

Vigilance
Whenever Jiraiya, Toad Sage or another creature you control enters, return up to one target creature you control with lesser mana value to its owner's hand.
Frogs you control have "{t}: Add {g} or {u}. Spend this mana only to cast a creature spell."

“A tale is only as good as it’s final turn of events.”
-Jiraiya