Ronan, Claimed by Gix

Whenever you attack, each opponent loses
X life and you gain X life where X is the number of attacking creatures. If Ronan, 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 Ronan, Lost to Phyrexia. It enters the battlefield tapped
and attacking.