Jeskai's Challenge

Start with this card in the challenge zone. At beginning of your upkeep put an age counter on it an roll a dice:
1/2 - Put a 3/2 flying creature token into the challenge zone
3/4 - Each creature in challenge zone Gain +X/+0, being X the number of age counters on Jeskai's challenge, and vigilance until end of turn. 4/6 - You lose 3 life and exile a non land permanent.