Anthem of Rakdos (DIS 102)

Enchantment • Mana cost: {2}{B}{R}{R} • Dissension • Rare

Whenever a creature you control attacks, it gets +2/+0 until end of turn and this enchantment deals 1 damage to you.
Hellbent — As long as you have no cards in hand, if a source you control would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

Illustrated by Ralph Horsley.