Paradoxical Outcome [Kaladesh Prerelease Promos] ARC125-R you may discard a card

you may discard a card with cost 0

Set: Judge Gift Cards 2008 Type: Instant Rarity: Rare Cost: {W} Kicker {W} (You may pay an additional {W} as you cast this spell

The night I think is best for hiding all

Set: Unlimited Edition Type: Creature — Cat Rarity: Rare Cost: {W} The traditional kings of the jungle command a healthy respect in other climates as well

If it's a 'non-attack' action card

Paradoxical Outcome [Kaladesh Prerelease Promos] ARC125-R you may discard a cardSet: Kaladesh Prerelease Promos Type: Instant Rarity: Rare Cost: {3}{U} Return any number of target nonland, nontoken permanents you control to their owners' hands. Draw a card for each card returned to your hand this way. The results of Rashmi's experimentation forced her to consider the possibility that multitudinous realities existed beyond her own.