MTG Izzet Cauldron Deck by Capriccioso

Whenever you discard one or more cards, put that many +1/+1 counters on this creature. Cycling {2} ({2}, Discard this card: Draw a card.)

When this creature enters, discard a card, then draw a card. Delirium — Whenever this creature attacks for the first time each turn, if there are four or more card types among cards in your graveyard, untap target creature. After this phase, there is an additional combat phase.

Flying, vigilance When this creature enters, draw two cards. Then discard two cards unless you discard an instant or sorcery card or a creature card with flying.

Haste When Tersa Lightshatter enters, discard up to two cards, then draw that many cards. Whenever Tersa Lightshatter attacks, if there are seven or more cards in your graveyard, exile a card at random from your graveyard. You may play that card this turn.

{0}: Add X mana in any combination of {U} and/or {R}, where X is Vivi Ornitier's power. Activate only during your turn and only once each turn. Whenever you cast a noncreature spell, put a +1/+1 counter on Vivi Ornitier and it deals 1 damage to each opponent.

Flying When this creature enters, draw a card. As long as you have one or fewer cards in hand, if you would draw one or more cards, you draw that many cards plus one instead. Warp {1}{U}

You may spend mana as though it were mana of any color to activate abilities of creatures you control. Creatures you control with +1/+1 counters on them have all activated abilities of all creature cards exiled with Agatha's Soul Cauldron. {T}: Exile target card from a graveyard. When a creature card is exiled this way, put a +1/+1 counter on target creature you control.

When Proft's Eidetic Memory enters, draw a card. You have no maximum hand size. At the beginning of combat on your turn, if you've drawn more than one card this turn, put X +1/+1 counters on target creature you control, where X is the number of cards you've drawn this turn minus one.

Gift a tapped Fish (You may promise an opponent a gift as you cast this spell. If you do, they create a tapped 1/1 blue Fish creature token before its other effects.) Return target creature an opponent controls to its owner's hand. If the gift was promised, instead return target nonland permanent an opponent controls to its owner's hand.

Choose one — • Abrade deals 3 damage to target creature. • Destroy target artifact.

Target creature gets +3/+0 and gains haste until end of turn. Harmonize {4}{R} (You may cast this card from your graveyard for its harmonize cost. You may tap a creature you control to reduce that cost by {X}, where X is its power. Then exile this spell.)

Draw three cards. Then discard two cards unless you discard a creature card. Harmonize {4}{U} (You may cast this card from your graveyard for its harmonize cost. You may tap a creature you control to reduce that cost by {X}, where X is its power. Then exile this spell.)

({T}: Add {U}.)

({T}: Add {R}.)

{T}: Add {R}. {T}: Add {U}. Activate only if you control an Island or a Mountain.

This land enters tapped unless you control two or fewer other lands. {T}: Add {U} or {R}.

({T}: Add {U} or {R}.) This land enters tapped. When this land enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

{T}: Add {C}. {4}: This land becomes a 3/3 creature with vigilance and all creature types. It's still a land.