Hell be providing some insight into the lore and flavor of these cards
If your only cunning opponent controls Runed Halo with Gifts Ungiven chosen for it, or controls Leyline of Sanctity and/or similar cards, you cannot cast Gifts Ungiven, since you cannot target your opponent with that spell, and you may not target yourself
Although it originally launched on consoles in 2023, its iOS debut is in early 2025
This might just be because it's difficult to build a cascade-themed deck, especially without some of the expensive big-hitters like Rashmi, Eternities Crafter and Maelstrom Wanderer (which were likely too new and too expensive for Commander 2016 ), but the end result is a deck that is vaguely cascade-ish but not a good cascade deck by any stretch
In this case, its fine for Minds Aglow to just be a fun extra that you can throw into your psychedelia theme deck at some point down the line