Ishian, The Pain Prospector

{t}: For each -1/-1 counter among creatures you control, remove each, then choose up to 3, and
for each one you choose beyond the first, you lose 3 life:
• Create X Treasure tokens.
• You get X Energy Counters, where X is the number of counters removed.
During your turn, damage you deal is dealt in -1/-1 counters.
Death is no excuse to stop working.