At the beginning of each end step, if you gained 3 or more life this turn, draw a card.
Build a mono-white lifegain engine that consistently gains 3+ life each turn to turn The Gaffer into a repeatable card-draw machine, solving white's biggest weakness. You play incremental lifegain enablers early, then leverage the steady card flow to deploy a wide board or value engine that grinds opponents out.
Reliable card advantage in mono-white, a color starved for draw
Lifegain provides a strong cushion against aggro and burn
Cheap 3-mana commander that's easy to recast
Synergizes with the deep pool of efficient white lifegain payoffs
Card draw is capped at one per end step regardless of how much life you gain
Lifegain itself doesn't directly win the game without payoffs
Vulnerable to spot removal and graveyard-light, recursion-poor mono-white
Lifegain matters cards can be slow without enough density of triggers