Trample Keldon Battlewagon can't block. When Keldon Battlewagon attacks, sacrifice it at end of combat. Tap an untapped creature you control: Keldon Battlewagon gets +X/+0 until end of turn, where X is the power of the creature tapped this way.
When Zegana, Utopian Speaker enters the battlefield, if you control another creature with a +1/+1 counter on it, draw a card. {4}{G}{U}: Adapt 4. Each creature you control with a +1/+1 counter on it has trample.
Flash Flying When Angel of Grace enters the battlefield, until end of turn, damage that would reduce your life total to less than 1 reduces it to 1 instead. {4}{W}{W}, Exile Angel of Grace from your graveyard: Your life total becomes 10.