crystal sliver

Slivers you control enter the battlefield with
X +1/+1 counters (including this one)
whenever a sliver card dies, its controller
may move its +1/+1 counters to other slivers.
That player pays {2} mana for each counter
moved in this way.
Its crystals empower itself and others,
and can salvage them from their bodies.
a dangerous but rewarding proses