Mortar Upgrade
Place this card under a friendly structure. It has this ability:Explosive Shell
Once per turn, during your Attack Phase, you may target a card exactly 2 spaces away from this card. Discard the top card of your draw pile to add 1 damage to the target and to each card adjacent to it.
Card Strategy
A less versatile but more powerful version of the turret, Mortar Upgrade can be very expensive to fire but it is more reliable and can be extremely efficient when it hits several targets.
This upgrade is very good in defense and also in pushes where clumps of targets are created. However, unless you are attacking a key target, you shouldn't fire mortars if it doesn’t hit at least 2 targets. 1 damage for 1 card is too inefficient. Even when hitting 2 targets, generally it is not that great to play mortar just for that as it’s also not the most efficient use. Though if the game looks like you will be able to consistently fire for 2 damage several turns, then go ahead.
Mortar will also occasionally be used to kill your own units, to trigger rigged explosives or not let free magic be left around for the enemy in the form of damaged Bug Biters.
This upgrade is very good in defense and also in pushes where clumps of targets are created. However, unless you are attacking a key target, you shouldn't fire mortars if it doesn’t hit at least 2 targets. 1 damage for 1 card is too inefficient. Even when hitting 2 targets, generally it is not that great to play mortar just for that as it’s also not the most efficient use. Though if the game looks like you will be able to consistently fire for 2 damage several turns, then go ahead.
Mortar will also occasionally be used to kill your own units, to trigger rigged explosives or not let free magic be left around for the enemy in the form of damaged Bug Biters.