Champion Lancer

The prevention clause draws a line the game rarely isolates so cleanly: combat invulnerability and actual durability are separate things, and this body only has the first. Read it precisely. It stops all damage from creatures, full stop, so blockers and attackers alike fail to dent it. A swinging 2/2 dies for its trouble while the Lancer takes nothing; a 5/3 also dies, since the 3/3's combat damage still applies even though none comes back the other way. (An attacker with four or more toughness simply survives the block and walks away.) The same clause turns aside a pinger's tap, a fight spell, or any creature-sourced damage trigger. What it does not do is grant immunity to creatures wholesale: Ravenous Chupacabra still destroys it, Shriekmaw still exiles it, any -X/-X effect still shrinks the body out from under it. The prevention answers exactly one threat vector and leaves every other one open: burn from instants and sorceries, edicts, exile, mass removal, and noncreature damage all sail through. The design is narrow by intent, the medieval Knight-as-wall fantasy rendered into rules text. It reads better as a roadblock in the abstract than it plays at the table, where the threats that decide games mostly are not creature damage. A 3/3 for six does nothing on offense, and the games an unburnable-by-creatures wall actually wins are rarer than the ones lost to everything it cannot touch.