Erayo, Soratami Ascendant
{1}{U}
Legendary Creature -- Moonfolk Monk
1/1
Flying
Whenever the fourth spell of a turn is cast, flip ~this~.
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~this~'s Essence
Legendary Enchantment
Whenever an opponent casts their first spell each turn, counter that spell.
Jace, Unraveler of Secrets
{3}{U}{U}
Legendary Planeswalker -- Jace
5
[+1]: Scry 1, then draw a card.
[-2]: Return target creature to its owner's hand.
[-8]: You get an emblem with "Whenever an opponent casts their first spell each turn, counter that spell."