🗿 notawikiAcross the Obelisk Codex · the answer, not the article

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0Vigorous
Monster · Corruption
All monsters gain: Max HP +30 All damage +1
Common▸ Monster
monster  Monster cards (enemy)
Upgrade paths
Upgrade A (yellow) · Common · cost 0
All monsters gain: Max HP +60 All damage +2
Upgrade B (blue) · Common · cost 0
All monsters gain: Max HP +45 All damage +1
Corrupted (purple) · Common · cost 0
All monsters gain: Max HP +75 All damage +2