BigLeafyTree posted:

Deckbuilding-wise there's a few solutions in Crossbones, Ephemeral Shroud, and Lightbender. In general a lot of Mech decks play 12 Mechs, and Mechs aren't for the most part the best minions. Once Mechaz0r has been dropped it's okay to burn resources to take it out because they've usually burned through a bunch of cards themselves to drop him as quickly as possible, and still have a decent number of now even less impressive Mechs in their deck.

Sword of Mechazor is the only Mech that doesn't signal in huge flashing lights "I'm going for Mechaz0r!", so if you see any of the others start replacing for whatever you have that can deal with it. Helm especially is virtually unplayable outside a Mech deck and the biggest tell.