Emeria, Cardcaster

Poisonous 1 (Whenever it deals combat damage
to a player, that player gets a poison counter.
A player with ten or more poison counters loses
the game.)
As long as Emeria, Cardcaster is on the battlefield, whenever you cast a noncreature spell,
you may pay {1}, and counter the spell.
Create a Green Illusion creature, where its
power and toughness is equal to countered spell's
converted mana cost.