Trauma Link

Exile Trauma Link: Target creature you control
gains Trample. Whenever that creature deals
combat damage to an opponent, you may have
that opponent and you discard that many cards,
then draw as many cards as each player discarded. (These effects last while Trauma Link is exiled in this manner.) When that creature goes to the
graveyard from the battlefield, you may return
Trauma Link from the exile zone to its owner's
hand at end of turn. Play this ability as a sorcery.