Safere Mercer

When you declare attackers, flip three coins.
For each Heads, choose one until end of turn:
- Safere gains Hexproof
- Safere gains +3/3
- Safere gains Double Strike
For each Tails, choose one:
- Lose 3 life
- Safere doesn't untap during your next upkeep.
- Sacrifice Safere