Ith, High Arcanist

Vigilance
{T}: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.
Suspend 4—{W}{U}

Depopulate

Each player who controls a multicolored creature draws a card. Then destroy all creatures.

Day of Judgment

No Witnesses

Each player who controls the most creatures investigates. Then destroy all creatures. (To investigate, create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

Shatter the Sky

Each player who controls a creature with power 4 or greater draws a card. Then destroy all creatures.