Exotic Upgrade Tree 15

All upgrades are multiplicative unless stated otherwise.

Icon	Name	Increases	Base cost	Effect per level	Base level requirement
	Raining gold	Gold earnings	1920	35%	351
	All main attributes	Main attributes of all heroes and guardians	1920	30%	351
	Firestone effect	Firestone effect	1320	120%*	352
	Guardian power	Damage of all guardians	480	35%	352
	Damage specialization	Main attributes of all damage heroes	1440	35%	353
	Healer specialization	Main attributes of all healer heroes	1440	35%	353
	Tank specialization	Main attributes of all tank heroes	1440	35%	354
	Prestigious	Firestones earned after prestige	1920	30%	354
	Skip stage 6200–6400	Chance to skip a stage between 6200 and 6400	240	1%*	355
	Skip wave 6200–6400	Chance to skip a wave between 6200 and 6400	240	1%*	355
	Skip stage 6400–6600	Chance to skip a stage between 6400 and 6600	240	1%*	356
	Skip wave 6400–6600	Chance to skip a wave between 6400 and 6600	240	1%*	356

* additive effect

The total cost to finish tree 15 is 738,240 exotic coins.

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