Batterskull Combos
Brash Taunter + Aetherflux Reservoir + Batterskull
Cleric Class + Walking Ballista + Batterskull
Famished Paladin + Sorcerer's Wand + Batterskull
Lurking Roper + Sorcerer's Wand + Batterskull
Maralen of the Mornsong + Timestream Navigator + Batterskull
Combo result
Infinite turns.
Prerequisites
Timestream Navigator in your library. All other permanents on the battlefield. Batterskull attached to Maralen. Your life total is at least four. An opponent cannot block and kill Maralen. You control nine permanents and/or have the city's blessing. {U}{U}{U} available each turn.