You only have the support drone in attack an defence battles. But you can use the old drones to upgrade the support drone to allow stronger upgrades to be added to make it better in battles.
The higher the old drone in v2 the more costly it becomes to use in upgrading your new drone. But the higher the old drone the more exp it offers if you can afford the costly diamond fees.
You can also upgrade each individual drone upgrade when the main drone reaches a certain power level. But without lords of gold an diamonds, it takes a little time.
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The higher the old drone in v2 the more costly it becomes to use in upgrading your new drone. But the higher the old drone the more exp it offers if you can afford the costly diamond fees.
You can also upgrade each individual drone upgrade when the main drone reaches a certain power level. But without lords of gold an diamonds, it takes a little time.