Sorry but this is broken/OP/too much.
The idea of the spell changing with the mark sounds good anyways, so I say you should just tweak it.
looks well, I like it. Mass quint was too much, specially thinking that you only need the
mark and 7|6
to quint a whole field. Fortunately changed.
LOOKS balanced, but this way you can buff a Crimson Dragon with the mark, or even add Sky Blitz for a whooping 60 damage. I know it's a long combo, that the Dragon is too weak and that stuff, but it shouldn't be ignored, stuff like this make a card go broken. I like the effect nontheless, maybe could have something to do with missing attacks and that stuff.
dunno. Looks well, but... dunno. Next!
wait, so you play plague and this in a mummy (no RT) and you have renewable autokill in a Mono? Looks bad, OP to me.
just evil. Imagine an immaterial diamond shield with 4 defence. In a mono. Maybe broken, just maybe. Momentum and poison are counters, but there's just one shield with 3 defence for some reason. I guess more (and immaterial, in a mono) may be too much. I like the +1 in defence anyways.
plain, simple, entropic... yeah, it fits. I'd like something more creative but meh... Sometimes "simple=better"
the only thing that makes me doubt is how in the name of Zanz you would choose your mark.
looks like a counter to itself. What would happen if you play the card and you don't have a mark? Whatever, I don't like messing up with marks. They're supposed to be untouchable, so I guess I disagree with this one, but it's just a feeling.
tricky, good for fractal chargers (with mark of Gravity), dunno, looks like good.
makes sense, but you should tell what kind of creatures would it breed (from the same element/s of the parents, any element, only from Life). All in all I like it.
so it's a mass Chaos Seed? Or only similar to it? May be balanced, but buffing an entire army of fractalled RoL's sounds disturbing, even though the mark should be
.
I don't have a clue of how you will choose the cards, see them or whatever but sounds like a crapload of coding, so I recommend it should be reworked.
mass freeze? Maybe it's too much, maybe not. But looks kinda OP. It's like a diss shield that turns Shockwave into instakill. Maybe it could add something freezy to a shield/weapon/creature instead.
Huh, it's over
this will need lots of thinking, and as most of the ideas are already complex, it'll be even more thinking...