ver.

Scalefeather Egregore

Arcane
Conjuration
Nature
Level 5
At the end of your turn, if you control 10 or more living or arcane allies and no Egregore, summon a Scalefeather Egregore.
The Egregore can cast your blizzard, nightmare aura, devour mind, void beam, toxin burst, and lumbriogenesis spells if you have them.
The Egregore is unsummoned at the end of your turn if you control fewer than 10 living or arcane allies.

Attributes:

None
Note: May be incomplete, see limitations.