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The subject of this article is only available in Solo Adventures.
It is a part of limited content and does not appear in any other game modes.
The subject of this article is only available in Solo Adventures.
- You might be looking for one of these cards: Upgrade!, Upgrade! (Classic).
Upgrade! is a boss spell card used in Book of Heroes.
Appears in[]
Gallery[]
  Upgrade!, full art |
Patch changes
Patch 18.2.0.58213 (2020-09-08):
- Added.
