Twrch Trwyth

Infect (This creature deals damage to creatures in
the form of -1/-1 counters and to players in the form
of poison counters.)
When Twrch Trwyth becomes blocked, it deals
X damage to defending player, where X is the
blocking creature's converted mana cost.
Discard or sacrifice an Enchantment: return
Twrch Trwyth to its owner's hand. Draw a card.