Smashy Who Spreads Fires

Trample
Smashy Who Spreads Fires costs {r/g} less to cast
for each creature that dealt combat damage to a
player this turn.
Other creatures you controls get +X/+X where
X is half their converted mana cost rounded up.
Whenever a creature you control deals combat
damage to a player, you may draw 1 card, then
discard 1 card.