Rymes, God of the Hunt

Undying
At the beginning of your Upkeep, target opponent chooses one of the following:
Leader- When Rymes, God of the Hunt attacks this turn, he gains Lifelink, Double Strike, and Trample. Then, defending player must sacrifice a creature and discard a card.
Watcher- Rymes, God of the Hunt cannot attack this turn. All creatures you control gain +3/+4, First Strike, and Trample until end of turn.