Tahngarth, First Mate

The design gag here is that you get to loan out your own commander as a weapon. The trigger fires during someone else's combat, not yours: leave Tahngarth tapped at the end of your turn, and when a foe swings at another player you can shove him into that attack, then pick which player or planeswalker he lands on. The redirect belongs entirely to you, not the borrowing player, so this is not a gamble on where their aggression falls: it is you steering a 5/5 onto a target of your choosing, riding an attack you were never a part of. The blocking restriction is what makes the loan worth taking. On your own offense it caps the blocker math to a single body. When he is fighting on someone else's turn, it stops the defending player from gang-blocking him with a wall of tokens, so the redirected swing keeps its teeth. The cost is the tap requirement and the fact that he leaves your control until end of combat: you commit him to a combat you don't govern and hope to get him back intact. It is political-combat design built for a table of three or more, where the value is less about the body than about turning other players' aggression into a lever you alone control.