I have a red/green deck. Can I use my red spells on my green creatures, and my green spells on my red creatures?
I am fairly new to MtG so I am sorry if this appears as a sort of nooby question.
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Sign up to join this communityYes, you can. If a spell targets a creature, unless it says otherwise, it can target any creature of any colour. The spell's own colour is simply a non-issue.
Consider that if you did have to cast red spells on red creatures, or black spells on black creatures, Doom Blade would be completely useless, being a black spell which says:
Destroy target nonblack creature.
There are a few exceptions:
And naturally, the creature has to be a valid target for the spell.
The same principles apply to all spells. You can cast Fade into Antiquity on non-green enchantments, and so on.