Initiative can make it a lot more difficult to play creatureless(-ish) control
These are known as "bombs." While Morphling might be a great constructed card (foreshadowing), it won't win games unless backed by counterspells and other blue accoutrements
Imagine you have any creature
$0.79 Drizzt Do'Urden (Showcase) Adventures in the Forgotten Realms Variants $2.99 Bruenor Battlehammer Adventures in the Forgotten Realms $1.79 Icingdeath, Frost Tongue Token Adventures in the Forgotten Realms $0.35 Ranger's Longbow Adventures in the Forgotten Realms $8.99 Lolth, Spider Queen Adventures in the Forgotten Realms $0.49 Guenhwyvar Token Adventures in the Forgotten Realms $0.79 Arbor Elf Worldwake $0.39 Guenhwyvar Token Adventures in the Forgotten Realms $1.99 Icingdeath, Frost Tyrant Adventures in the Forgotten Realms $0.35 Punishing Fire Zendikar $1.99 Primevals' Glorious Rebirth Dominaria $0.79 Instrument of the Bards (Extended Art) Adventures in the Forgotten Realms Variants 0 results found
This rare cycle was all sorceries that had the added ability that you could pay an extra Instead of punishing you for playing these as "instants," this cycle chose to require an additional cost
Cards like Skyreach Manta and Etched Oracle have the potential to be powerful in Affinity with the right mana fixing, such as Paradise Mantle or just the land cyclers