When Leonin Relic-Warder enters the battlefield, its first ability triggers.
Holding priority, activate Parallax Wave by removing a fade counter from it, exiling Karmic Guide.
Resolve the Leonin Relic-Warder trigger, 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 5, returning Karmic Guide from exile to the battlefield.
When Karmic Guide enters the battlefield, it triggers, returning Leonin Relic-Warder from your graveyard to the battlefield.
Repeat from step 2.
This elegant loop sets up a perpetual motion machine of exiles and returns by weaponizing the delayed triggers of both Parallax Wave and Leonin Relic-Warder. By constantly exiling and re-exiling these enchantments and creatures, you trigger Karmic Guide to repeatedly resurrect Leonin Relic-Warder from the graveyard. Meanwhile, Goblin Bombardment converts this endless cycle of sacrifices into infinite damage to close out the game.