Shieldgen

Description
The generator gives 10 shields to every being in a nearby (adjacent or diagonal) tile each second.

Strategy and Synergy
Placing a shield generator away from the enemy's side of the field can help it stay alive and prevent it from buffing enemies, who may otherwise move next to it.

Shield generators are one of the best ways to keep other structures alive; two shield generators next to each other can be nearly indestructible if given enough of a head start to build up shield, while turrets under the protection of shield generators become much more survivable.