One of those silly cards that doesn't look that powerful, Treetop Spider would be picked maybe fifth in a pack? Then he'd jump forward and play MVP to decks, dominating combat. I don't remember anybody ever accusing the card of being unfair... but I knew a lot of people who feared this spider dropping on the table.

That's quite a step up on Giant Spider, isn't it? Which is already a pretty good draft pick. I'd like to see this be somehow worse than GS - be it , 2/3, 1/5 - just anything to avoid obsoleting that pretty awesome card. I mean, Penumbra Spider is almost always a better card for your deck, but it at least costs . (Hee, and you just reminded me how my green-red Wort EDH deck found a way to survive Sphinx of the Steel Wind for a turn or two more than it ought to have :) )

Giant Spider is really only a bomb in draft, and it's falling a bit out of favor, but I can appreciate the sentiment. I added a green in the mana cost. Uncommons should be better cards than commons, but they probably shouldn't flat out obsolete good commons.