Yes, you do. If you have two Resources and one EX Resource, you can play any card that is Lv.3 or less.

Since the EX Resource was removed from the game and the number of Resources has decreased, the Lv. of cards you can play decreases by the same amount.

After paying the card's cost as you normally would to play it, pair it with a Unit as a Pilot instead of activating its Command effect.

Yes, you can.

Yes, you can.

Yes, there is. Up to six Units can be deployed into the battle area.

Yes, you can. If you want to deploy a new Unit when the battle area is full, place one previously deployed Unit into the trash, then deploy the new Unit. The Unit placed into the trash at this time is not treated as being destroyed.

Yes, there is. Up to one Base can be deployed into the base section of the shield area.

Yes, you can. Place the previously deployed Base into the trash, then deploy the new Base. The Base placed into the trash at this time is not treated as being destroyed.