Spike

Spike has Hexproof and Deathtouch
{t}Choose an Opponent, Flip a coin,
Losers life Total becomes Zero
{t}Sacrifice Spike, Destroy target Plainswalker.
{6}{t} put 6 Bullet Counters on Spike, as Spike
untaps remove all Counters from him, Destroy 6
Creatures your Opponents control
Catch you later...