Ko'Tukatli, Stone Sunderer

Flying, ward {x}
At the beginning of each upkeep, put a petrification counter on each non-artifact
creature. Creatures with four or more petrification counters are artifacts in addition
to their other types and loose all abilities.
Ko'Tukatli, Stone Sunderer's power and ward
are each equal to the amount of petrification
counters amongst creatures that have died.