Many cards will get overlooked because of the restricted space for gold cards
In addition, using enchantments that put more counters on your creatures makes them all into bigger threats, and in Helga's case, lets it tap for even more mana
Rishadan Dockhand is actually unplayable in the deck, particularly given the archetypes desire to hold up mana to flash in threats or counter spells
As a Commander it excels, but in the 99 its equally potent
In 1v1 Constructed, you can get your spells through your blue opponents counterspells, helping you to resolve that Atraxa, Grand Unifier
There are times where this will backfire, but I think the biggest advantage of this over Pyrostatic Pillar as a maindeck card is that you cant get locked under it by a bigger creature deck as easily because you can just chump block with it and go back to casting spells