Ratadrabik of Urborg Combos
Ratadrabik of Urborg + Boromir, Warden of the Tower
Ratadrabik of Urborg + Twinflame + Mondrak, Glory Dominus
Ratadrabik of Urborg + Mondrak, Glory Dominus + Legion Loyalty
Ratadrabik of Urborg + Nim Deathmantle + Ashnod's Altar
Ratadrabik of Urborg + Samwise the Stouthearted + Altar of Dementia
Ratadrabik of Urborg + Samwise the Stouthearted + Ashnod's Altar
Ratadrabik of Urborg + Samwise the Stouthearted + Carrion Feeder
Ratadrabik of Urborg + Samwise the Stouthearted + Phyrexian Altar
Ratadrabik of Urborg + Samwise the Stouthearted + Viscera Seer
Ratadrabik of Urborg + Twinflame + Adrix and Nev, Twincasters
Ratadrabik of Urborg + Leyline of Singularity + Woe Strider
Ratadrabik of Urborg + Vesuvan Duplimancy + Adrix and Nev, Twincasters
Ratadrabik of Urborg + Vesuvan Duplimancy + Mondrak, Glory Dominus
Sharuum the Hegemon + Ratadrabik of Urborg + Arcbound Ravager
Combo result
Infinite creature tokens. Infinite colorless mana. Infinite +1/+1 counters on artifact creatures you control. Infinite ETB. Infinite LTB. Infinite death triggers. Infinite sacrifice triggers. Infinite blinking of artifacts. Put all artifacts from your graveyard onto the battlefield.
Prerequisites
All permanents on the battlefield.