Putrefaction

Whenever an opponent casts a spell, that player loses 5 life unless they discard a card.

Whenever a player casts a spell, counter it unless that player pays .

Whenever a creature you control deals combat damage to a player, that player discards a card.

As this enchantment enters, choose a color.

Whenever a player casts a spell of the chosen color, that player loses 1 life.

Myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

Whenever this creature deals combat damage to a player, that player discards a card.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

Whenever this creature deals damage to a player, that player discards a card.