mtg avatar card list price Magic: The Gathering | Avatar: The Last Airbender Collector Booster | 1 Pack of 15 Cards Master of Elements Aang, the Last Airbender #4

Creating additional combats is incredibly powerful but needing to Crew one with Baltheir and Fran, and pay three mana, is a lot of requirements for Standard

Kefka, Court Mage / Kefka, Ruler of Ruin Rating: 8/10 Kefka is the big bad of Final Fantasy VI and one of the most famous villains in the entire series

Only one card has been printed of The One Ring (Serialized 001 of 001), and this card can only be found in one English-Language Main Set (not Special Edition) Collector Booster

That gives it a distinct weakness, though you could try playing around it with cards like Teferi, Time Raveler to minimize the value your opponents get