Upgrade Cards
MORTAL KOMBAT X Guide
These cards are used specifically to upgrade the rank or level of a special attack or increase your character's level. Special attacks are categorized as Special 1, Special 2, Special 3, and X-Ray. Upgrade cards are specific to the character tier (bronze, silver, and gold) and the special's rank. For example below, this upgrade card can be used only on a Bronze tiered character's Special Attack 1.
Upgrade Cards are not available in store. You can get them by daily login rewards or by buying Alliance Packs. Also, since upgrade cards rank up a Special Attack's level for free and the more expensive the higher level SP attacks get, it is advisable that to use the upgrade cards in the higher levels. That way, you'll save more Koins and you'll get more worth for your upgrade card.
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