Full Force Virus

As an additional cost to cast this spell sacrifice a black creature with toughness 2 or greater.
Enchant player
Put 3 virus counters on this card.
Enchanted player reveals their hand and all cards they draw and discard all creature cards with toughness 1 or less.
Remove 1 virus counter at the end of each of the enchanted player's turns and sacrifice this card if there is no virus counters on it.