Tourach, Dread Cantor

Kicker {B}{B} (You may pay an additional {B}{B} as you cast this spell.)
Protection from white
Whenever an opponent discards a card, put a +1/+1 counter on Tourach, Dread Cantor.
When Tourach enters, if it was kicked, target opponent discards two cards at random.

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Triggered abilities are put on the stack in turn order, starting with the player whose turn it is. For example, if an opponent discards a card with madness during your turn, the madness trigger will resolve before Tourach's ability can put a +1/+1 counter on it. If they discard it during their turn, Tourach's ability puts a +1/+1 counter on it before they can cast the spell.