Rubblehulk | Magic: The Gathering
Formats Rubblehulk is Legal in
Official Oracle Text for Rubblehulk
Bloodrush — , Discard Rubblehulk: Target attacking creature gets +X/+X until end of turn, where X is the number of lands you control.
Official Rulings for Rubblehulk
1/24/2013 : If you activate Rubblehulk's bloodrush ability, the value of X is the number of lands you control when that ability resolves.