MTG Commander Spoiler – Mana Charged Dragon card from the new Commander decks soon to be released.

Mana-Charged Dragon



Flying, trample
Join Forces – Whenever Mana-Charged Dragon attacks or blocks, each player starting with you may pay any amount of mana. Mana-Charged Dragon gets +X/+0 until end of turn, where X is the total amount of mana paid this way.