Yuriko, the Tiger's Shadow - Intelligence

Yuriko balances cheap enablers, Ninjas, top-deck setup, high-mana-value cards that remain castable, and interaction that protects combat connections.

Commander ninjutsu may be activated from hand or command zone. It is an activated ability, does not pay commander tax, and does not increase future commander tax.

The unblocked attacking creature controlled by the activating player is returned to hand as part of the activation cost, before opponents can respond.

Commander ninjutsu can be activated only after blockers are declared. Yuriko enters tapped and attacking on resolution, was not declared as an attacker, and does not create attack-declaration triggers.

An attacker that was blocked remains blocked even if every blocker leaves combat, so it cannot become a commander-ninjutsu return target that way.

Ninjutsu can be activated during declare blockers, combat damage, or end of combat, but activating after normal combat damage usually prevents that Ninja from dealing combat damage.

Yuriko triggers for herself and for each Ninja you control that deals combat damage to a player. Multiple triggers stay separate and can be ordered by the controller.

Players may respond between Yuriko triggers. The current top card is revealed and put into hand as each trigger resolves, and that movement is not drawing a card.

Each opponent loses life equal to the revealed card's mana value. The ability does not target and damage prevention does not stop it.

Lands have mana value zero; X is zero in the library; alternate, reduced, delve, pitch, and free-cast costs do not change mana value; split, modal double-faced, Adventure, and Prototype cards require exact off-stack rules checks.

An empty library follows the rules-verified result for the trigger rather than fabricating a revealed card or value.

Start with cheap evasive attackers, bring Yuriko in after blockers, and protect repeated Ninja connections.

Use top-deck setup and high-mana-value cards with low effective costs to make each trigger matter.

Use the Yuriko shell to draw cards and pressure life totals while keeping a compact Oracle finish.

Use Fallen Shinobi and similar combat-damage Ninjas as a branch, not as Yuriko's universal Strategy.