Activate Mine Worker by tapping it, causing you to gain three life.
Prize Pig triggers, putting three ribbon counters on it, then removing all ribbon counters on it and untapping it.
Activate Prize Pig by tapping it, adding {U}.
Activate Pemmin's Aura's first ability by paying {U}, untapping Mine Worker.
Repeat.

Infinite lifegain

Infinite lifegain triggers

Prize Pig

Pemmin's Aura

Mine Worker

Power Plant Worker

Tower Worker

Activate Mine Worker by tapping it, causing you to gain three life.
Prize Pig triggers, putting three ribbon counters on it, then removing all ribbon counters on it and untapping it.
Activate Prize Pig by tapping it, adding {U}.
Activate Freed from the Real's second ability by paying {U}, untapping Mine Worker.
Repeat.

Combos with "Tower Worker"