Thanks to its ability not requiring the creature being tapped, it can be activated over and over again, as long as mana is available, meaning this creature can grow to impossible sizes very quickly
Adding other aristocrat staples like Vito, Thorn of the Dusk Rose and Blood Artist can drain your opponents life totals more expeditiously as more of your creatures die through sacrifice outlets and during combat
Zurgo, Incited Rabble and the like are all way more interesting cards to play with and they both have similar function and power level
Color pie bends and breaks are risky, and blue cards like Acid Rain have all kinds of fun breaking those rules
Creature Artifact - Gnome Splashy Big Stuff (CTRL to add secondary) Thopter Stuff Liberator, Urza's Battlethopter Flash Flying You may cast colorless spells and artifact spells as though they had flash
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