Champion of the Clachan
Behold-and-exile looks like a straight card tax: you set a Kithkin aside as an additional cost, seemingly eating it to cast the spell. The leaves-the-battlefield trigger turns that tax into a loan, though, because the exiled card comes home when this creature dies or bounces. So you pay one Kithkin (off the board or straight from hand), get a 4/5 flash body plus a team-wide anthem, and reclaim the beheld creature on the back end. That symmetry rewards the obvious loop: blink or sacrifice your own Champion to reset the exiled card back to your grip. It also means the +1/+1 the rest of your Kithkin get is riding on a permanent you have real incentive to protect rather than throw into a race. Flash is the other half of the pitch. An anthem that can arrive at end of turn or mid-combat, before blockers are declared or after an alpha strike, threatens differently than one you slam on your main phase and pass: it grows the board at the exact window it matters and slips under sorcery-speed sweepers that resolve on the opponent's turn. And because the cost demands a Kithkin already exists somewhere you can reach, in hand or in play, this reads as a payoff rather than a build-around. You cannot cast it into an empty grip and empty board, and it pays out precisely when the Kithkin count is high enough for the anthem to swing a fight.
