{3}, {T}: Tap target creature and put a +1/+1 counter on it. Until end of turn, that creature gains "{2}{G}{U}: Double the number of +1/+1 counters on this creature."
The vats are self-contained worlds, bubbling and churning with unnatural speed, boiling down eons of change into moments.
When this artifact enters, exile the top two cards of your library face down. {1}, {T}: You and target opponent each secretly choose 1, 2, or 3. Then those choices are revealed. If they match, sacrifice this artifact and put all cards exiled with it into their owners' hands. Otherwise, exile the top card of your library face down.
Each player looks at the top five cards of their library and may reveal a land card and/or an instant or sorcery card from among them. Each player puts the cards they revealed this way into their hand and the rest on the bottom of their library in a random order. Each player gains 3 life.
Imprint — When this artifact enters, you may exile target land you control. Whenever a land with the same name as the exiled card is tapped for mana, its controller adds one mana of any type that land produced.
When this artifact enters, each player chooses a nonland permanent and puts a doom counter on it. {2}, {T}, Sacrifice this artifact: Destroy each permanent with a doom counter on it.
When Eye of Vecna enters, you draw a card and you lose 2 life. At the beginning of your upkeep, you may pay {2}. If you do, you draw a card and you lose 2 life.
"I see all things as they truly are! I see . . . decay in all flesh, and betrayal in every heart."
{3}, {T}, Sacrifice a creature: Reveal a number of cards from the top of your library equal to the sacrificed creature's power. Put one into your hand and exile the rest.