I feel lame for creating this card.

You control this, Twinblade Slasher, Basking Rootwalla, and Wolfbitten Captive. Then you play a kicked Rite of Replication targeting this. How many times will you be able to give Mimeodropping +2/+2 each turn, provided that you have the mana? How does the answer change if Wolfbitten Captive subsequently transforms?

That's easy: once. Even though you control 9 creatures with the ability, each only has it once. And if Wolfbitten Captive transforms, you'll still have 7 other creatures.

That's a confusing ability, but I really like what it does to deck building. For example, if you had a Will-o'-the-Wisp, a Darkling Stalker and a Drifting Shade, the Mimeodropping would have all three abilities, due to the separate creatures 'interlocking' with each other. It would be nice, however if this creature cost more and was a 3/3 to optimize how many abilities it could use. 0 power doesn't work with, like, half the creature abilities in Magic... and it's unlikely that this thing would be active on round 2 anyways.

dude1818: Consider how many instances of "If more than two creatures you control share an ability, Mimeodropping gains that ability." each copy would have, and you'd start to see a problem there.

It's an awesome ability, definitely. Belongs at rare though.

But does the game know that those are the same ability, or not? The game knows that two creatures with vigilance share an ability, but there's no "tag" on the Twinblade Slasher ability for the game to latch onto... or am I think about this the wrong way?