When you are about to suffer DMG: you can discard 1 on-hand ♥, prevent this DMG and select another player to:
a) Make him suffer 1 DMG; then, that player draws X cards (X = his # of wounds after the DMG; max. 5).
b) Make him lose 1 HP; then, that player takes the card you discarded.
Your ♠ are always regarded as ♥.