Dig Through Time This is a Delve-powered card selection, and clearly one of the best blue cards MTG has ever designed for finding exactly what you need
A single lightly played ( LP ) copy sets the mark, with no recent near-mint ( NM ) sales or listings
Jwari Disruption counters target spell unless its controller pays , but it can be used as a Land too, so its flexibility makes it a nice inclusion (given the fact that we needed more target removal options)
L5R would also often add new gimmicky victory conditions in expansions, such as opening enough of the 12 Black Scrolls either before (7) or after (12) the event The Darkest Magics comes up to revive the Dark God Fu Leng, or seizing control of (playing) all 4 Walls of Otosan Uchi before the event The 38th Hantei Falls comes up to effect a coup
If you wanted to lean into stax, you could probably keep a Kithkin subtheme, and it might be amusing to lock everyone down and then kill them with such an unlikely and underappreciated type of creature