At the beginning of your upkeep, destroy the creature with the least power. It can't be regenerated. If two or more creatures are tied for least power, you choose one of them. When there are no creatures on the battlefield, sacrifice Porphyry Nodes.
"The mists coalesced into silent warriors. We charged them and broke through their lines, only to see them swirl and re-form behind us." —Golas Mahr, black knight
For each tapped nonland permanent target opponent controls, search that player's library for a card with the same name as that permanent. Put those cards onto the battlefield under your control, then that player shuffles. Suspend 3—{1}{U}{U}
Counter target spell. Its controller discards a card.
"Two magi could trade spells all day and never crown a victor. The real battle is not one of power but of will. If your confidence breaks, so too shall you." —Venser
Counter target instant or sorcery spell. Its controller reveals cards from the top of their library until they reveal an instant or sorcery card. That player may cast that card without paying its mana cost. Then the player shuffles.
"With a twitch of its muscles, its timeline forks. Then, just as quickly, its two selves reintegrate. Causality, strangely, seems not to mind." —Rukarumel, field journal
Tidewalker enters the battlefield with a time counter on it for each Island you control. Vanishing Tidewalker's power and toughness are each equal to the number of time counters on it.
Morph {U} When Timebender is turned face up, choose one — • Remove two time counters from target permanent or suspended card. • Put two time counters on target permanent with a time counter on it or suspended card.
Target player draws two cards, then discards four cards.
"To probe the wonders of the multiverse, to gaze upon worlds unspoiled by blade or spell . . . it's enough to make one weep for the possibilities denied."
As Circle of Affliction enters the battlefield, choose a color. Whenever a source of the chosen color deals damage to you, you may pay {1}. If you do, target player loses 1 life and you gain 1 life.