The Happy Mask Salesman

Whenever a creature dies, exile it with a Mask
counter on it.
{2}{b}: The Happy Mask Salesman gains all
abilities of target creature exiled with a Mask
counter on it until end of turn. (This does not
remove other abilities that it had before activating this ability.)
"You've met with a terrible fate, haven't you?"
-The Happy Mask Salesman