Chromatic Orrery, Clock of Omens, Retrofitter Foundry, and Zirda, the Dawnwaker Combo

Chromatic Orrery, Clock of Omens, Retrofitter Foundry, and Zirda, the Dawnwaker

Here's how the cards Chromatic Orrery, Clock of Omens, Retrofitter Foundry, and Zirda, the Dawnwaker results in Infinite card draw, Infinite colorless mana, Infinite creature tokens, Infinite death triggers, Infinite ETB, Infinite LTB, and Infinite sacrifice triggers

Chromatic Orrery

Clock of Omens

Retrofitter Foundry

Zirda, the Dawnwaker

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Prerequisites

Chromatic Orrery on the battlefield
Clock of Omens on the battlefield
Retrofitter Foundry on the battlefield
Zirda, the Dawnwaker on the battlefield
available

Steps

Activate Retrofitter Foundry's second ability by paying and tapping it, creating a 1/1 Servo token
Activate Retrofitter Foundry's first ability by paying , untapping it
Activate Retrofitter Foundry's second ability by paying and tapping it, creating a 1/1 Servo token
Activate Chromatic Orrery's first ability by tapping it, adding
Activate Retrofitter Foundry's first ability by paying , untapping it
Activate Clock of Omens by tapping two Servo tokens, untapping Chromatic Orrery
Repeat for infinite Servo tokens
Once you have infinite Servo tokens, you may activate Retrofitter Foundry's third and then fourth ability for infinite Construct tokens, and Chromatic Orrery's second ability for infinite card draw