What are the abilities of Karn, Legacy Reforged?
user
Karn, Legacy Reforged's power and toughness are each equal to the greatest mana value among artifacts you control.\nAt the beginning of your upkeep, add {C} for each artifact you control. This mana can't be spent to cast nonartifact spells. Until end of turn, you don't lose this mana as steps and phases end.
assistant