Flying
At the beginning of your upkeep, sacrifice Nicol Bolas unless you pay .
Whenever Nicol Bolas deals damage to an opponent, that player discards their hand.

Flying, trample
At the beginning of your upkeep, sacrifice Palladia-Mors unless you pay .

Except for creatures named Akron Legionnaire and artifact creatures, creatures you control can't attack.

When this creature is put into your graveyard from the battlefield, you may return it to your hand.