The Curve Keeper (Unknown Event #RW47)

The Curve Keeper {4}{W}{W}

Legendary Creature — Human Soldier

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.)

THE

3/3
Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny