Contaminated Sky

Infect (This enchantment deals damage to creatures
in the form of -1/-1 counters and to players in the form
of poison counters.)
Whenever a creature you control dies, you get a
poison counter.
{3}, Remove three poison counters from you: Contaminated Sky deals 1 damage to each
creature, planeswalker, and player.
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Photoshopped version: https://i.imgur.com/E65r9Z7.png