The Verges (range in prices, mostly $4-$7 now from $10 heights) I like these to travel back upwards into the $10 or even $15 range before they rotate out of Standard
While -X loyalty costs existed since Lorwyn , Gideon, Champion of Justice was the first planeswalker to have essentially a variable positive loyalty ability where he could gain a different amount of loyalty depending on how many creatures the opponent controls
With no limit in place on the amount of Energy you can win, for anyone who gets ridiculously lucky it's a card that could fully power up a Pokemon instantly to carry you through a battle
But I think the Portal model was a bold step for the game, and I wish it could bring forward some of those little innovations
So long as you can keep him protected, or can bring him back with Cruella's ability, he can truly tip the scales or serve as a lightning rod for your opponent's ire while your other cards mop up
Legendary Planeswalker - Chandra Color tag templates(None) Planeswalker (CTRL to add secondary) Sorcery Qty: 12 Price: $34.66 Aftershock Destroy target artifact, creature, or land