The Curve Keeper
Type
Legendary Creature — Human Soldier
Mana Cost
{4}{W}{W}
Power / Toughness
3 / 3
Oracle Text
Creatures you control get +X/+0, where X is the greatest number of consecutive nonland, nontoken permanents in a mana curve you control. (For example, if you have permanents with mana value 3, 4, and 5, creatures you control get+3/+0. If you're missing 4, they only get +1/+0.)