Apocalypse Rising

When Apocalypse Rising enters the battlefield,
exile target emblem you control.
When Apocalypse Rising leaves play, return the
exiled emblem to the battlefield under
your control.
Horseman type creatures you control have
undying. (When a creature with undying dies, if it
had no +1/+1 counters on it, return it to the battlefield
under its owner's control with a +1/+1 counter on it.)