Mana-Charged Dragon 84/320 (Commander Anthology)

Flying, trample Join forces — Whenever this creature attacks or blocks, each player starting with you may pay any amount of mana. This creature gets +X/+0 until end of turn, where X is the total amount of mana paid this way.

NM - $2.60
LP - $2.10
MP - $1.60
HP - $1.50
DMG - $1.50