Krelli Stowaways

If a Zombie you control would die, you may exile
it and put a +1/+1 counter on Krelli Stowaways
instead.
Pact — Whenever an opponent would
investigate, you may get a debt counter. Then,
pay 1 life for each debt counter you have. If you
do, that opponent does not investigate.
"They think their burrows are well-guarded, but we
all know the pass for entry is a fresh brain."