Leon Fairfield, Deft Con

First Strike, Haste

When Leon Fairfield, Deft Con enters, you may choose a creature card with a mana cost of 3 or less
in your hand (5 or less if the creature is a Rogue).
If you do, that card's mana cost becomes 0 and gains Vigilance while Leon Fairfield, Deft Con is in play.

{t}{2}Sacrifice a creature: Target opponent loses 2 life and you survey 1.