Aerys II, the Mad King

Blood (You may link this creature with another
unlinked creature with Fire when either enters the
battlefield. If you do, this creature can't attack or
block as long as you control both of them.)
At beggining of your upkeep, flip a coin. If you
win the flip, Aerys II deals 5 damage to all
creatures without flying. If you lose the flip, each
player discard their hands and draw seven cards.
Madness {u}