This blocks most stuff, deals with a lot of awkward problem cards and usually has some recursion options
That way, the control player can answer the opponents plays, wait until the coast is clear, then attack with their creature land over the course of several turns
The Green uncommon two-drop will ETB, equip for free, and then hit a dork and give protection in ward 2 and reach too
That sequence hits their board, their hand, and then turns the tables
So, while Animated Army can bring the pain, you have to be very careful not to get wiped out of the game before you can make that happen
Much like her former teacher, Glarb, Helga is mostly concerned with spells that cost four or more mana , but Helga narrows her focus to strictly creature spells