Criatura — Esfinge pirexiano
4 / 4
Vuela.
Siempre que lances un hechizo que no sea de criatura, pon un contador de aceite sobre la Soberana del suero.

, remover un contador de aceite de la Soberana del suero: Roba una carta, luego adivina 2.
Removing an oil counter is part of the cost to activate Serum Sovereign's last ability. Players can't respond with a spell or ability that removes counters to prevent you from drawing a card and scrying 2.