Poltergeist Spell

[golfer20]

INFO
Troops within the spell drop radius become invisible and are not attacked by defenses or heroes and do not activate the clan castle or activate traps. While invisible, incoming mortar shots do not damage these troops.
STATS
Radius of 4.
Level 1, 2 seconds, 35000 gold
Following upgrades at Lab Level 7
Level 2, 2.5 seconds, 40000 gold
Level 3, 3 seconds, 46000 gold
Level 4, 3.5 seconds, 52000 gold
WHY USE IT
Even though the time is short, a few seconds invisible can give a hoard of archers enough time to take a mortar or wizard tower without n being shot, and allow air troops to take out air defenses and possibly inferno towers.

[1997Chris1]

Sounds basically like an invincibility spell of sorts. You drop it on a group of witches and they produce an endless stream of skeletons... And the witches can't be attacked... Especially if multiple spells are used. Creative but a bit overplowered

[inkredible]

It is op with a couple of rage spells, i suggest you make the cost more so the cost of lv 2 upgrade is 45,000 and everytime you upgrade new troops can turn invisible for example
lv1=barb, arch, gob, minion
lv2=giant, wallbreaker, balloon
lv3=hog rider, and so on

[RKO]

Using 5 of these can give a very long time of invisibility and with witches it would be completely op.

[golfer20]

Using 5 of these can give a very long time of invisibility and with witches it would be completely op.

I think less time and more cost could work