This card, very plainly, is a piece of crap. Tenacity is known as one of the worst cards that is very well known, because it is in the core set. To start, it takes 3 ER (effective resources) to get out on the table, and then another specific resource () to activate once, get discarded, and ready your hero. To top it off, the art is just meh with a picture of Spider-Man fixing some buildings. I would erase this card's text, "Spend a resources...", and then I would probably still not use it, but it wouldn't be as bad. This card works well with Friction Resistance in Quicksilver's kit, but that is one card in a hero-specific kit. On MCDB most people only put this in decks with Quicksilver or Iron Man. I just like Stick-To-Itiveness (the 'Pool version) better.
Rating: (A+:C-) C