Tyl Regor, Grineer Geneticist

Whenever a grineer you control dies, put X +1/+1 counters on target grineer you control, where X is the number of counters
that permanent had plus one.
{g/u}, {t}, sacrifice a grineer: Regenerate another target grineer. That creature has hexproof
and indestructible until beginning of your
next end step.