Nardole, Resourceful Cyborg, Chakram Retriever, and Mystic Speculation

Prerequisites

• Nardole, Resourceful Cyborg on the battlefield
• Chakram Retriever on the battlefield
• Mystic Speculation in hand
• Nardole has at least three counters on it
• Nardole does not have summoning sickness

Steps

1. Activate Nardole by tapping it, adding at least that can only be spent to cast noncreature spells
2. Cast Mystic Speculation with buyback by paying
3. Chakram Retriever triggers, untapping Nardole
4. Resolve Mystic Speculation, causing you to scry 3 and return Mystic Speculation to your hand
5. Repeat
6. If Nardole has at least four counters on it, this combo nets infinite that can only be spent to cast noncreature spells, and you may target any other creature using Chakram Retriever's trigger

Results

• Infinite magecraft triggers
• Infinite mana creatures you control can produce
• Infinite scry 3
• Infinite storm count
• Infinite untap of creatures you control