Like most Magic: The Gathering cards, the value of Storm of Saruman depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (The Lord of the Rings: Tales of Middle-earth)
I'm less enthused about Hivepool at six mana--it doesn't start pumping out Sliver tokens until turn seven and is disappointingly redundant in multiples
Then, if youre playing allies, you get to ramp with all your 1-drop allies and tokens
Yes, you need to have a basic land for it to work, but thats not a big ask to take out a creature or planeswalker with little chance your opponent will get it back
Though Kida, Royal Warrior isnt the flashiest cheap card you can play, it could be the difference between pulling off your planned strategy and failure