But if I were being less generous, I would point out that Magic already had 30 years to figure out how to make good and cool cards
That's a Seething Song
Nasty fast in the kill box
This card is probably most at home with commanders such as Urza, High Lord Artificer and Teferi, Temporal Archmage that can run a good number of basic lands and have built-in ways to break parity on the effect through untapping and mana production
A master of light and shadow with that Aethershield Artificer twinkle in the eye, those Goblin Researchers hands, and the bad ass attitude of Dovin's Veto and Fairgrounds Warden, his characters all have this feeling of being caught in the middle of something awesome, but pausing, for a sec, looking at you through the frame of the card and asking you to check out whats next
For example, for RNA, I had 28 of the 60 (4x15) total Mythics