Emerald Medallion
Artifact
Green spells you cast cost 
less to cast.
It is a sun-dappled glade in the morning, the aroma of spring's first blossoms, and the melody of birds chirping in a joyful chorus. It is life.
イラスト：
Modern Horizons 3#291レア英語適正
裁定
2004年10月4日
The generic X cost is still considered generic even if there is a requirement that a specific color be used for it. For example, “only black mana can be spent this way”. This distinction is important for effects which reduce the generic portion of a spell’s cost.
2004年10月4日
This can lower the cost to zero, but not below zero.
2004年10月4日
The effect is cumulative.
2004年10月4日
The lower cost is not optional like with some other cost reducers.
2004年10月4日
Can never affect the colored part of the cost.
2004年10月4日
If this card is sacrificed to pay part of a spell’s cost, the cost reduction still applies.