Gorgon Recluse

Gorgon Recluse's ability triggers when it blocks or becomes blocked by a nonblack creature and creates a delayed triggered ability that will destroy that creature at the end of combat step. It destroys that creature then even if Gorgon Recluse doesn't survive that long or the creature somehow becomes black.

If you discard a card with madness to pay the cost of a spell or activated ability, that card's madness triggered ability (and the spell that card becomes, if you choose to cast it) will resolve before the spell or ability the discard paid for.

Casting a spell with madness ignores the timing rules based on the card's card type. For example, you can cast a sorcery with madness if you discard it during an opponent's turn.