Ratadrabik of Urborg + Boonweaver Giant + On Serra's Wings + Phyrexian Altar

Prerequisites

• On Serra's Wings attached to Boonweaver Giant.

Steps

1. 1Activate Phyrexian Altar by sacrificing Boonweaver Giant, adding one mana of any color.
2. 2When Boonweaver Giant dies as a legendary creature due to On Serra's Wings, Ratadrabik of Urborg triggers, creating a token copy of Boonweaver Giant that is a 2/2 Zombie in addition to its other types.
3. 3When the Boonweaver Giant token enters the battlefield, it triggers, returning On Serra's Wings from your graveyard to the battlefield attached to the token.
4. 4Repeat.

Effects

• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers