Flawless Maneuver, Silkguard, Tyvar's Stand, Boros Charm, Swiftfoot Boots, Winged Boots, and the new Flare of Fortitude are some of the best ways to ensure our Commander does not depart from the battlefield
Penny allows the player to pick up one of their basic Pokmon and all cards attached to it, which would also be an effective way of healing that Pokmon from damage
On your side of the board, they make for a great potential to draw lots of cards for minimal cost
I will say that this Sylveon ex artwork goes hard, and is much better than the artwork we got even in Evolving Skies, only lending to its stellar value
It's useful as a fast sanity check but shouldn't be your primary pricing tool
Keep in mind you can block 1 attacking creature with multiple others