Agatha of the Vile Cauldron, Silvanus's Invoker, and Nikya of the Old Ways

Prerequisites

• Agatha of the Vile Cauldron on the battlefield
• Silvanus's Invoker on the battlefield
• Nikya of the Old Ways on the battlefield

Steps

1. Activate a land by tapping it, adding
2. Nikya of the Old Ways triggers, adding
3. Activate Silvanus's Invoker by paying , untapping the land and causing it to become an 8/8 Elemental with trample and haste in addition to its other types until end of turn
4. Repeat

Results

• Infinite untap of lands you control
• Infinite mana lands you control can produce
• Infinite power and toughness for most creatures you control until end of turn