Activate Parallax Wave by removing a fade counter from it, exiling Reveillark.
When Reveillark leaves the battlefield, it triggers, returning Leonin Relic-Warder from your graveyard to the battlefield.
When Leonin Relic-Warder enters the battlefield, its first ability triggers, exiling Parallax Wave.
When Parallax Wave leaves the battlefield, it triggers.
Holding priority, activate Goblin Bombardment by sacrificing Leonin Relic-Warder.
When Leonin Relic-Warder leaves the battlefield, its second ability triggers, returning Parallax Wave from exile to the battlefield.
Resolve the Goblin Bombardment ability, dealing 1 damage to any target.
Resolve the Parallax Wave trigger from step 4, returning Reveillark from exile to the battlefield.
Repeat.
This brilliant loop turns Parallax Wave into a self-sustaining engine by letting Leonin Relic-Warder perpetually reset it, feeding a continuous chain of exile and return triggers. Whenever Reveillark hits the graveyard, it acts as the ultimate recursion piece to bring back the Relic-Warder, while Goblin Bombardment converts every iteration of this sacrificial cycle into infinite damage to any target.