Mystery Booster Playtest Cards 2021

Sorcery

Until end of turn, cards you own that aren't on the battlefield lose all card types, costs, names, and abilities and become red sorceries named Missile that cost {R} with "Missile deals 2 damage to any target."

Bombardment

Enchantment Land

Enchanted Prairie enters tapped.
{T}: Add {W} or {U}.

Enchanted Prairie

Kaldheim

Enchantment — Saga

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I, II — Choose a creature you control. Until your next turn, all damage that would be dealt to creatures you control is dealt to that creature instead.
III — Return target creature card from your graveyard to the battlefield with a flying counter on it. That creature is an Angel Warrior in addition to its other types.

Ascent of the Worthy

The List

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Return target instant card from your graveyard to your hand.
II — Return target sorcery card from your graveyard to your hand.
III — Until end of turn, whenever you cast an instant or sorcery spell, copy it. You may choose new targets for the copy.

The Mirari Conjecture

Sorcery — Adventure

Put two +1/+1 counters on target creature. (Then exile this card. You may cast the creature later from exile.)