Hydromancy, or water divination, which our girl Helga seems to be quite well-versed in, is the process of telling the future or finding out hidden information through water
The more destroy all creatures cards you play, the more of a liability mana dorks become
In general, collectors are looking for near-mint (or even graded) copies of cards as investments, which often leads to a huge gap between the price of played and unplayed copies
I cant see this helming any sort of fair blue deck, and you should know that Aphetto Alchemist is the make-or-break combo piece for this Commander
Mockingbird copies exactly what was printed on the original creature, except it's a Bird in addition to its other types and it has flying, and nothing else (unless that creature is copying something else or is a token
This commander plays much better if you use the mana reduction to make 2-3 mana interaction spells cost a single mana rather than getting a discount on bigger cards like Breach the Multiverse