Activate Woe Strider by sacrificing Kobolds of Kher Keep.
When Kobolds of Kher Keep dies, Mortuary and Remembrance trigger.
Resolve the Mortuary trigger, putting Kobolds of Kher Keep from your graveyard on top of your library.
Resolve the Remembrance trigger, searching your library for Kobolds of Kher Keep and putting it into your hand.
Resolve the Woe Strider ability, causing you to scry 1.
Cast Kobolds of Kher Keep by paying 0.
Repeat.
This clever loop is centered around the zero-mana cost of Kobolds of Kher Keep, allowing you to cast it over and over again without draining your mana supply. Each time Woe Strider sacrifices the tiny creature, Mortuary steps in to instantly rescue it from the graveyard by placing it right back on top of your library. Simultaneously, Remembrance takes advantage of that exact same death trigger to tutor another copy of the creature straight from your library and directly into your hand. This seamless cycle lets you recast the free threat indefinitely, fueling endless sacrifice triggers, scry filtering, and a massive storm count while Woe Strider happily presides over the carnage.