Tephysea, Elven Hunter

Vigilance, haste
When Tephysea, Elven Hunter enters the battlefield destroy target tapped creature.
Tephysea, Elven Hunter gains power equal
to that creatures power.
{b/g}, Discrad a card. Tephysea, Elven Hunter gains unblockable until the end of turn.
They die fast. Fast enough anyway.