Lucario, Aura Warrior

Lucario's power is equal to 1 plus how much
life you have lost from your starting life total.
When Lucario deals combat damage to a
permanent or player, put an aura counter on it
or them. Lucario deals double damage to the permanents and players with aura counters on
them.
{u}{u/r}{r}: Put an aura counter on target creature.
Until end of turn, creatures with aura counters
on them cannot block Lucario.
First Strike