Stormsplitter | Sorcerer Class | Mystic Speculation

Cards

({5} magic symbol) at most, depending on how many
Stormsplitters and/or other creatures you control without summoning sickness available.

Activate any creature you control that does not have summoning sickness by tapping it, adding ({U} magic symbol) that can only be spent to cast an instant or sorcery spell, or to gain a Class level.
Repeat step 1 until you control no untapped creatures without summoning sickness, or until you have ({2} magic symbol) ({U} magic symbol) available, whichever comes first.
Cast
Mystic Speculation with buyback by paying ({2} magic symbol) ({U} magic symbol) .
Each
Stormsplitter you control triggers, and
Sorcerer Class's third ability triggers if it is level 3.
Resolve the
Stormsplitter triggers, creating that many token copies of
Stormsplitter.
Resolve the
Sorcerer Class trigger, if applicable, dealing damage to any target equal to the number of instant and/or sorcery spells you've cast this turn.
Resolve
Mystic Speculation, causing you to scry 3 and return
Mystic Speculation to your hand.
Repeat.

Infinite LTB.
Infinite ETB.
Infinite damage.
Infinite storm count.
Infinite creature tokens with haste.
Infinite magecraft triggers.
Infinite scry 3.
Infinite blue mana that can only be spent to cast instant and/or sorcery spells.
Infinite red mana that can only be spent to cast instant and/or sorcery spells.