Blistercoil Weird + Mystic Speculation + Memory Crystal + Sorcerer Class

Blistercoil Weird

Mystic Speculation

Memory Crystal

Sorcerer Class

How it works

1. Activate Blistercoil Weird by tapping it, adding that can only be spent to cast an instant or sorcery spell, or to gain a Class level.
2. Cast Mystic Speculaiton with buyback by paying .
3. Blistercoil Weird triggers, and Sorcerer Class's third ability triggers if it it level three.
4. Resolve the Blistercoil Weird trigger, giving itself +1/+1 until end of turn and untapping it.
5. Resolve the Sorcerer Class trigger, if applicable, dealing damage to each opponent equal to the number of instants and sorceries you've cast this turn.
6. Resolve Mystic Speculation, causing you to scry 3 and return Mystic Speculation to your hand.
7. Repeat.

This elegant loop turns a simple spell into a relentless engine by utilizing Memory Crystal to completely eliminate the buyback cost of Mystic Speculation, letting you cast it for just a single blue mana. To generate that mana, you tap Blistercoil Weird for a mana granted by Sorcerer Class's level 2 ability, which conveniently untaps the Weird every time you cast an instant or sorcery thanks to its own trigger. As you repeat this cycle of casting and returning Mystic Speculation, Blistercoil Weird grows infinitely large while Sorcerer Class's level 3 ability converts your endless spellcasting into lethal, escalating damage to each opponent.