Improved S.A.R.S. Legendary Artifact Enchantment - Aura; 2020; Enchant creature; Indestructible; When enchanted creature blocks or becomes blocked by a creature, attach to that
creature a token artifact enchantment aura named "Improved S.A.R.S." with same
abilities as Improved S.A.R.S. Enchanted creature has "At the beginning of your upkeep, select three other
creatures without Improved S.A.R.S. and attach to them a token artifact
enchantment aura named "Improved S.A.R.S." with same abilities as Improved
S.A.R.S."; Enchanted creature has "At the beginning of the end step, put a -1/-1 counter on
this creature."; Enchanted creature has "At the end of your upkeep, if enchanted creature has
3 or more -1/-1 counters gained this way, exile Improved SARS.