Market price
Normal
- Near Mint
- $1.08
- Lightly Played
- $1.05
- Moderately Played
- $0.66
- Heavily Played
- $0.47
- Damaged
- $0.25
- Near Mint
- $1.08
- Lightly Played
- $1.05
- Moderately Played
- $0.66
- Heavily Played
- $0.47
Buy
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At the beginning of each upkeep, count the number of permanents. If the number is odd, until end of turn, red creatures get +1/+1 and whenever a player taps a Mountain for mana, that player adds an additional 
. If the number is even, until end of turn, red creatures get -1/-1 and if a player taps a Mountain for mana, that Mountain produces colorless mana instead of any other type.
Illustrated by Drew Tucker
Rulings (1)
May 1, 2006
In Two-Headed Giant, triggers only once per upkeep, not once for each player.