Ranshi's Funhouse

At the beginning of your upkeep, target
opponent chooses one--
- That player gets a coward counter, then you
draw a card for each coward counter they have.
- During that player's next turn, each black
creature card in your graveyard gains jump-scare.
(You may cast that card from your graveyard as
though it had flash by discarding a card with the
same converted mana cost as that card in addition
to paying its other costs.)