Twinblade Paladin

Twinblade Paladin

Creature - Human Knight | Power/Toughness: 3 / 3 (CMC 4)
Whenever you gain life, put a +1/+1 counter on Twinblade Paladin.
As long as you have 25 or more life, Twinblade Paladin has double strike. (It deals both first-strike and regular combat damage.)