Zaffai, Thunder Conductor + Dual Casting + Intruder Alarm

Prerequisites

• Dual Casting attached to a creature without summoning sickness.
• You have an instant or sorcery card in hand with mana value five or greater, and enough mana to cast it.
• Creatures you control can tap to produce at least .

Steps

1. 1Cast any instant or sorcery with mana value five or greater by paying its mana cost.
2. 2Zaffai triggers, causing you to scry 1 and create a 4/4 Elemental creature token.
3. 3The Elemental enters the battlefield, triggering Intruder Alarm, untapping all creatures.
4. 4Activate all mana-producing creatures you control by tapping them, adding at least .
5. 5Activate the creature with Dual Casting attached by paying and tapping it, copying the instant or sorcery spell you cast.
6. 6Repeat from step 2.

Effects

• Infinite copies of instant or sorcery spells you cast
• Infinite creature tokens
• Infinite ETB
• Infinite magecraft triggers
• Infinite mana creatures you control can produce
• Infinite scry 1
• Infinite untap of creatures