Can you tell me the text of Jötun Owl Keeper?
user
Cumulative upkeep {W} or {U} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)\nWhen Jötun Owl Keeper dies, create a 1/1 white Bird creature token with flying for each age counter on it.
assistant