Selvala, Heart of the Wilds, Temur Sabertooth, Eternal Witness, and Benefactor's Draught

Prerequisites

• Selvala, Heart of the Wilds on the battlefield
• Temur Sabertooth on the battlefield
• Eternal Witness in hand
• Benefactor's Draught in hand
• Selvala does not have summoning sickness
• You control a creature with power nine or greater
• available

Steps

1. Activate Selvala by paying and tapping it, adding at least to your mana pool
2. Cast Benefactor's Draught by paying , untapping all creatures you control and drawing a card
3. Cast Eternal Witness by paying
4. Eternal Witness enters the battlefield, returning Benefactor's Draught from your graveyard to your hand
5. Activate Temur Sabertooth by paying , returning Eternal Witness from the battlefield to your hand
6. Repeat

Results

• Infinite card draw
• Near-infinite colored mana
• Near-infinite ETB
• Near-infinite LTB
• Near-infinite magecraft triggers
• Near-infinite storm count