Aphelia, Viper Whisperer

Deathtouch
Whenever Aphelia attacks, you may pay {1}{b/g}. If
you do, create a 1/1 black Snake creature token with deathtouch.
{4}{b}: Until end of turn, whenever one or more Gorgons and/or Snakes you control deal combat damage to a player, that player loses half their life, rounded up.

Embrace thine oblivion, as shall I
—Messmer