best avatar mtg cards Avatar: The Last Airbender (Black & Red) Top 20 Avatars in Magic:

But Liliana, Untouched by Death is the most Zombie-specific of them all

The newly revealed Alma Madrigal Matriarch of the Family is probably the best single card upgrade for this deck

Gladiolus loves his instant ramen

It even deals some extra damage with its end step ability, which is relevant to this cards strength since it lets decks that care about the graveyard use Valakut Exploration without worrying about losing cards to exile

That leave you with only the regular artifacts in the set, and while there are a significant number, Im not sure there are going to be enough in your typical Blue deck to just have this work, since it is a completely useless card without other Artifacts

Red is usually paired with blue, that can support the monkey with Countermagic