Still worse than Antlion. And even if you adjust the stats again, i think it will look more like Graboid.
I don't think it will be worse than Antlion in any case. Immortality is precious in
no matter what.
Anyway, I suggest the following abilities:
1) Unborrow and take a buff. Cost would either be
or
.
2) Give it Momentum. It makes sense with the card's lore IMO.
3) Let it to summon another Roots from your deck to the field (that should cost about 4
).
4) Let it sacrifice itself to burrow target creature (the Roots drag the creature underground or something).
5) Pay
to burrow target creature for 1 turn (like the above, but not permanently).
6) Let it be affected by buffing spells (Chaos Power, Plate Armor etc.) despite of being burrowed, but with their buffing halved.
That's what I've come with for now.
