Rush of Knowledge
Sorcery
Draw cards equal to the greatest mana value among permanents you control.
Mana cost
4
U
Mana value
5
Printings
From
$0.17
EDHREC rank
#9334
Buy
Formats
Legacy
Legal
Vintage
Legal
Commander
Legal
Pauper
Legal
Rulings
7 Aug 2020
If a permanent on the battlefield has {X} in its mana cost, X is considered to be 0.

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