The Screeching Bats of Ixalan

Each time The Screeching Bats Of Ixalan deals combat damage to a creature, you may search
your library for any other Bat card and put it on
to the battlefield tapped.
When The Screeching Bats Of Ixalan dies, you
may search your library for any other Bat card
and put it on to the battlefield tapped.