Name: Parasite
Bonus: Spawn bonus +5% and for each enemy close to you +2% (or 3%) attack and def.
Story: These parasite's love to be close on enemy flesh. For each "master" they are next to, their bloodlust grow's larger.
idea of this is that players that doesnt want to slow down expanding are mostly afraid moving close to too many boarders as you get highlighted by that. Now you could attack on everything they see moving. after players get less, they get weaker so they need to spread alot to get good amount of units. It wouldnt be OP as there are races that have for example +5% attack and 10% spawn all the time. feel free to leave negative comments so i can think way to make it more balanced:P