msem-instigator

When Dreamsight Well enters the battlefield, shuffle any number of cards you own from outside the game into your library.
Whenever you cast a creature spell, if you have more cards in your library than each opponent, draw a card.

This spell costs {2} less to cast if your life total is less than or equal to half your starting life total.
Destroy all creatures.

When Flare Blitz enters the battlefield, it deals 3 damage to any target and you gain 3 life.
{1}{R}{W}: Return Flare Blitz to its owner's hand.

As an additional cost to cast this spell, pay X life.
Ignition Ritual deals X damage to each creature and each planeswalker.

When Into the Unknown enters the battlefield, create two 1/1 Scout creature tokens that are all colors.
Whenever a land enters the battlefield under your control, if it doesn't have the same name as another land you control, put a +1/+1 counter on each creature you control.

Discard your hand, then draw three cards.
Mindstorm's Eye deals 3 damage to any target.

Each player mills three cards.
Draw a card.

Each creature gets -X/-X until end of turn. Destroy each artifact and enchantment with mana value X or less.

Exile target creature an opponent controls. Each player may search their library for a basic land card and put that card onto the battlefield tapped. Then each player who searched their library this way shuffles.