Big Cultist

Defender
{u}{b}{r}{g}{t}, Sacrifice 4 Cultists you control: Put
Cult Dragon into play from your hand or command zone, then Big Cultist becomes a 5/5 Dragon with flying. Untap Big Cultist. Activate this ability
only any time you may cast a sorcery.
{b}{r}: If Big Cultist is a dragon, dragons you control get +1/+1 until end of turn. Otherwise, scry 1, draw a
card, and sacrifice a creature.