Activate Kiki-Jiki by tapping it, creating a token copy of Lumbering Battlement.
When the Lumbering Battlement token enters the battlefield, it triggers, exiling Kiki-Jiki until Lumbering Battlement leaves the battlefield.
Activate Woe Strider by sacrificing the Lumbering Battlement token.
When the Lumbering Battlement token dies, Kiki-Jiki is returned from exile to the battlefield.
Resolve the Woe Strider ability.
Repeat.
This ingenious loop transforms a simple duplication engine into a self-sustaining cycle by using Lumbering Battlement's entry trigger to temporarily hide your primary playmaker. By tapping Kiki-Jiki, Mirror Breaker, you spawn a copy of the Battlement that promptly exiles Kiki-Jiki, setting the stage for Woe Strider to step in. Feeding that token copy to Woe Strider's sacrifice ability immediately releases Kiki-Jiki back to the battlefield, ready to repeat the entire process and net you infinite enter-the-battlefield, death, and sacrifice triggers along with endless scry 1 utility.