Blood Vassal + Leyline of Singularity + Ratadrabik of Urborg

WUB identity

Commander legal

The 3 combo pieces

• Blood Vassal
• Leyline of Singularity
• Ratadrabik of Urborg

How to execute it

1. Activate Blood Vassal by sacrificing it.
2. When Blood Vassal dies, Ratadrabik triggers, creating a token copy of Blood Vassal that is a 2/2 legendary Zombie in addition to its other types.
3. Repeat using the Blood Vassal token

What the combo produces

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