Rather than restricting what spells of yours cost less, Helm of Awakening gives everybody the discount
While there is the occasional Tarmogoyf or Eternal Witness, almost every single card in greens top 25 generates a mana advantage or searches up the creatures or lands you want
Buying cards is an investment, and as such the value can go down as well as up, so its worth doing your homework before purchasing rare MTG cards whether its for a deck, a collection, or to sell on later
If you exile Eluge and bring it back, you can easily trigger its ability again
Slicer, Hired Muscle / Slicer, High-Speed Antagonist Slicer, Hired Muscle is one of the wildest Voltron commanders you can play, especially in multiplayer