A 3-mana Orzhov Ninja from Teenage Mutant Ninja Turtles that can Sneak in for {2}{W}{B}, and returns a creature from the graveyard on hit — straight to the battlefield if the Sneak cost was paid.
Sneak-and-reanimate decks. Paying the Sneak cost with an already-unblocked attacker turns her combat trigger into a full reanimation rather than a hand return, which is a real mana-value swing.
Ninjutsu and evasion shells. A deck already running unblockable or hard-to-block attackers has exactly the tool needed to pay the Sneak cost every combat.
Orzhov graveyard value. Even without the Sneak line, repeated recursion of the best creature in the graveyard is a strong grindy engine on its own.
How it does in Commander
As the commander
It's a reasonable budget commander for an Orzhov reanimator-and-evasion deck, though its full upside depends on consistently having an unblocked attacker to Sneak with, which makes it work better in a 99 built specifically to support that line.
In the 99
A flexible recursion piece in any black-white deck, doing fine work as simple card advantage even in decks not built around the Sneak cost specifically.
Formats it's strong in
Evasive, ninjutsu-style decks. The Sneak cost is trivial to pay when the deck is already running unblockable or hard-to-block creatures.
Reanimator-adjacent shells. Full reanimation off a single combat trigger is a strong rate for three mana, especially targeting a big creature already discarded or milled into the graveyard.
Formats it's weak in
Decks with no evasive attackers. Without something already getting through combat, the Sneak line is unavailable and the card is limited to its weaker, hand-return mode.
Empty-graveyard situations. With no creature card in the graveyard, the combat trigger does nothing at all.
Synergistic cards
Ninja of the Deep Hours — Another classic ninjutsu-style creature that pairs with the same evasive-attacker shell Karai wants.
Reassembling Skeleton — A creature happy to be in the graveyard, giving Karai a cheap, repeatable reanimation target.
Fleeting Distraction — A cheap way to force through an unblocked attacker for the Sneak cost when the board isn't naturally cooperating.
Any evasive attacker — Karai's whole upside depends on having something unblocked to feed her Sneak cost, so evasion support directly raises her ceiling.
Is it worth the price?
As a recent-set card, Karai, Future of the Foot is inexpensive and a low-risk pickup for an Orzhov reanimator or evasion-focused deck.