Thunderscape Familiar
First strike
Black spells and green spells you cast cost less to cast.
Thunderscape masters release familiars to help guide their apprentices down the thunderscape path.
Illustrated by Daren Bader
This printing
Prices
If a spell is both black and green, you pay
less, not 
less.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.
The lower cost is not optional like with some other cost reducers.
If this card is sacrificed to pay part of a spell’s cost, the cost reduction still applies.
This can lower the cost to zero, but not below zero.
Can never affect the colored part of the cost.
The effect is cumulative.
