That's something I end up having to do to a lot of Dirt cards I create; if you don't tweak them just right, Dirt cards can accidentally buff spellboost. A zero-cost spell is a massive spellboost buff, through and through.
I shall keep posting until my existence is acknowledged.
Anyway, more Dirt cards! My only real fear with this set would be the first overlapping with what Rabbit Mage is supposed to do.