Evolution Witness, Builder's Talent, and Urza's Bauble

Prerequisites

• Evolution Witness on the battlefield
• Builder's Talent on the battlefield
• Urza's Bauble in hand

Steps

1. Cast Urza's Bauble by paying its mana cost
2. When Urza's Bauble enters, Builder's Talent's second ability triggers
3. Holding priority, activate Urza's Bauble by tapping and sacrificing it
4. Resolve the Builder's Talent trigger, putting a +1/+1 counter on Evolution Witness
5. Evolution Witness triggers, returning Urza's Bauble from your graveyard to your hand
6. Repeat

Results

• Infinite card draw at the beginning of the next upkeep step
• Infinite draw triggers at the beginning of the next upkeep step
• Infinite +1/+1 counters on a creature
• Infinite storm count