Vulkan, Nightflying Overlord

Flying, lifelink
Eminence - Whenever you gain life, if Vulkan, Nightflying Overlord is in the command zone or
on the battlefield, you may reveal the top three
cards of your library. You may choose a Bat
creature card from them and put it onto the battlefield. Put the rest into your graveyard.
Other Bats you control get +1/+2 and have
lifelink and deathtouch.