Activate Famished Paladin using Silent Attendant's ability by tapping it, causing you to gain 1 life.
Famished Paladin triggers, untapping itself.
Repeat.

Infinite lifegain

Infinite lifegain triggers

Agatha's Soul Cauldron

Famished Paladin

Silent Attendant

Activate Lurking Roper using Silent Attendant's ability by tapping it, causing you to gain 1 life.
Lurking Roper triggers, untapping itself.
Repeat.

Lurking Roper

Activate Silent Attendant by tapping it, causing you to gain life.
The Destined White Mage triggers, putting a +1/+1 counter on Crystalline Crawler.
Activate Crystalline Crawler ability by removing a +1/+1 counter from it, adding {U}.
Activate Pemmin's Aura's ability by paying {U}, untapping Silent Attendant.
Repeat.

Combos with "Silent Attendant"