If the leaked data is accurate, thinking of this as umbral spike or uproot is not entirely accurate.
The damage multiplier indicated in that information is much smaller than the previous two spells. So even if it is the same, it is not really the same until much higher levels.
A cloak with damage may sound cool, but unless that damage, as many have already said, do not remove any tower disabling spells already in place, it will just lead to an early death of your dragon.
And no white spell on a. MYTHIC divine dragon?! A dragon that will cost, at a minimum, 77k sigils (about 3080 gold chests or 90 Super Sigil chests–just for reference… That’s assuming no other source of sigils). That’s an insult to all players, free or paying.
Remember Skarr? Let me show you why you miss him. (Need a few minutes).