This clever loop turns the unassuming Lurking Roper into a self-replicating engine by borrowing a classic Aura; enchanting it with Splinter Twin allows the Roper to tap and duplicate itself. Because the resulting token enters the battlefield, Healer of the Pride steps in to reward you with life, which in turn satisfies Lurking Roper's own life-gain trigger condition to untap the original and any copies you've made. The beauty of this synergy lies in how the static lifegain trigger bridges the gap between the creature's entry and its untap ability, letting you endlessly churn out hasty tokens.