Dragonlord Silumgar
Theft attached to a body is an old idea: Control Magic put it on a permanent decades back, Sower of Temptation stapled it to a flyer, and every one of them shares the same liability. Kill the thief and the steal unwinds. Silumgar shares that liability in kind; the difference is that it is built to survive the answers other thieves die to. A 3/5 puts the toughness above most red burn, and deathtouch turns any block or chump into a trade, so the creature anchoring your stolen permanent is genuinely hard to remove in combat. The body is the solution to the lineage's problem, not the theft clause: you keep what you took because killing the dragon is a worse deal than letting you have it. That clause reaches planeswalkers as well as creatures, widening the target list past what most thieves of its line could touch. The Elder Dragon framing is doing real work here: this is the dragon-tyrant rendered as a control finisher, a permanent that wins by taking your opponent's best threat and pointing it back, then sitting behind a deathtouch wall while it does. The 3 power is unimpressive on offense by design. Silumgar is not built to race but to consolidate, the slow-strangle dragon to its cycle-mates' aggression.
