Phyrexian Revoker

The descendant of Pithing Needle that learned to block. Naming a nonland card is the same prison the Needle built, but stapling it to a 2/1 body changes the math of when you cast it: a Needle effect that does nothing once the named ability stops mattering becomes an attacker, a chump, a clock. The lock keys off the names of sources rather than a single named permanent, so it suppresses activated abilities from anything bearing that name, copies and tokens included, before they can ever be put on the stack. It does not touch abilities already activated and waiting to resolve; the prohibition is a wall against activation, not a counter for things in flight. The choice happens as it enters, which is the constraint that defines its skill ceiling: you commit to one name with no information about what your opponent draws next, and a misnamed Revoker is a vanilla 2/1 that traded a card for nothing. What it answers is the entire category of activated-ability engines that ignore creatures: planeswalker loyalty abilities, mana rocks, equipment, the activated half of a combo piece. Note that fetchlands and other lands sit outside its reach, since the name chosen must be a nonland card. It cannot touch triggered abilities, cast triggers, or spells, which keeps it a precision tool rather than a blanket tax. The structural trick is the one that made Spellskite and Gaddock Teeg durable: disruption that earns its slot because the body still matters on turns the named ability never comes up.