You may cast instant and sorcery spells with mana value X or less from among them without paying their mana costs
At a glance, the card doesn't seem that powerful, countering a one-mana spell for one blue mana or, thanks to its Phyrexian mana cost, two life
Green Sun's Zenith is unbanned
For one, I'd think about my deck
Obosh, the Preypiercer Obosh, the Preypiercer is one of the fair companions, if such a thing exists
(As long as its on the stack, players cant cast spells or activate abilities that arent mana abilities.) Illustrated by Tracy Yardley Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp