Tanglesap

The Fog with a loophole written into it, and the loophole is the whole strategic point. Where a plain Fog stops every point of combat damage, this one carves out an exception for the keyword that exists specifically to ignore blockers: a trample creature still connects, and the green deck holding this card is usually the one with the tramplers. That makes it a one-sided combat blank in a fight between two creature decks, both of which are swinging in, where only the opponent's nontrample attackers fizzle. The asymmetry is the design: instead of buying a turn for both players the way a true Fog does, it buys a turn for the side already built to push damage through. It is a quietly aggressive card dressed as a defensive one, the kind of damage-prevention effect that rewards the attacker rather than the defender. The cost is that it does nothing against the very creatures a green ramp shell is most likely to be racing: a board full of trample threats walks through it untouched, so the card's value swings hard on what is actually attacking. As a piece of combat math, it is a sharper tool than the generic turn-buyer it resembles, with the trample carve-out doing the work of turning a symmetrical stall into a tempo swing in green's favor.