Silvanus's Invoker, and Nykthos, Shrine to Nyx

Prerequisites

• Silvanus's Invoker on the battlefield
• Nykthos, Shrine to Nyx on the battlefield
• You have at least eleven devotion to any color
• available

Steps

1. Activate Nykthos' second ability by paying and tapping it, causing you to add eleven mana of any color with which you have devotion
2. Activate Silvanus's Invoker by paying , causing Nykthos to become an 8/8 Elemental with haste until end of turn, and untapping it
3. Repeat

Results

• Infinite mana lands you control can produce
• Infinite untap of lands you control