The good news is that theres no reason to worry about whether cards are from the Retail or Convention versions because where the set overlaps, no one cares which packs theyre from, and the cards that are exclusive are only listed as those exclusives
The same is true of creatures that trigger when being blocked
Easier to achieve, especially when we consider the raw efficiency of the spell
Still, I believe that Expressive Iteration actually has deck building restrictions to it, being almost non-abusable in combo decks and holds up a much lower ceiling in Control decks
Flawless Maneuver As far as free spells go, Flawless Maneuver is relatively tame, especially when compared to other cards in its cycle like Fierce Guardianship and Deflecting Swat
In the often-play category, we have Spikefield Hazard and Akoum Warrior