Mosac, Leadlight Terror

Eminence- Whether Mosac, Leadlight Terror is either in the command zone or on the battlefield, Horror creatures you control get +1/+1 and have "pay {3}{t}: regenerate this creature.(mana paid must be of that creature)"
Double Strike, Vengeful
Vengeful - Whenever a horror creature you control dies, destroy target creature an opponent controls.
The Apocalypse of John began when the bells rang, trumpets sounded, and the ground shook.