Slave Knight Gael

Haste, Vigilance, Menace
Pay 14 life: Slave Knight Gael gains Double
Strike and Trample and becomes Hollow in
addition to its other types.
Pay 14 life: If Slave Knight Gael is a Hollow, it
gains +4/+4 and "Whenever this creature deals
combat damage to a player, destroy all other
nonland permanents."