Each time you sacrifice something, Korvold grows bigger and replaces itself with a card, so your board keeps moving while your hand stays full
Introduced in Rise of the Eldrazi, the Emrakul and its siblings Ulamog and Kozilek awoke from their slumber on the planes of Zendikar due to some ill-advised shennanigans on the part of some Planewalkers (heres looking at you, Nissa)
Use a Pokemons ability (these will usually be once per turn, per Pokmon, but will be specified on the card)
This dovetails nicely into our discussion of Brennan DeCandios second thesis, which is that Wizards of the Coast is deliberately sabotaging the Magic Online economy in order to make the switch to Arena more palatable
Even though you put your creatures at risk, its worth it to destroy a threatening creature
Aetherdrift 's Grand Prize: The Aetherspark Digital render