Boonweaver Giant, Blood Artist, Gift of Immortality, and Carrion Feeder

Prerequisites

• Boonweaver Giant on the battlefield
• Blood Artist on the battlefield
• Gift of Immortality on the battlefield
• Carrion Feeder on the battlefield
• Gift of Immortality attached to Boonweaver Giant

Steps

1. Activate Carrion Feeder by sacrificing Boonweaver Giant
2. Boonweaver Giant dies, triggering Blood Artist and Gift of Immortality
3. Resolve the Blood Artist trigger, causing target player to lose 1 life and you to gain 1 life
4. Resolve the Gift of Immortality trigger, returning Boonweaver Giant from your graveyard to the battlefield
5. Boonweaver Giant enters the battlefield, returning Gift of Immortality from your graveyard to the battlefield attached to Boonweaver Giant
6. Resolve the Carrion Feeder ability, putting a +1/+1 counter on it
7. Repeat

Results

• Infinite +1/+1 counters on Carrion Feeder
• Infinite death triggers
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite lifeloss
• Infinite LTB
• Infinite sacrifice triggers