Mishra, Claimed by Gix Finish:Nonfoil you may cast a spell

you may cast a spell from among cards exiled with this enchantment without paying its mana cost

Equipped creature gets +10/+10 and loses flying

haste Whenever Edgar attacks

You gain life equal to the greatest power among creatures sacrificed this way

If the player does

Mishra, Claimed by Gix Finish:Nonfoil you may cast a spellWhenever you attack, each opponent loses X life and you gain X life, where X is the number of attacking creatures. If Mishra, Claimed by Gix and a creature named Phyrexian Dragon Engine are attacking, and you both own and control them, exile them, then meld them into Mishra, Lost to Phyrexia. It enters tapped and attacking.