While Wizards has switched to a new inbox system, there are still some MTG Arena codes you can cash in
They've been designed with mechanically unique sets of abilities and, from what we've seen so far, look pretty powerful
A mono-black deck focused on artifacts and graveyard shenanigans, Necron Dynasties has 42 new cards in total, and each card in the deck, from reprints right down to basic lands, has art and flavour text to fit its Necron theme
Id also previously harvested a Sword of the Animist from the Final Fantasy 7 -themed Limit Break preconstructed deck which also seeks out basic lands
Ive written about Miirym, Sentinel Wyrm and Raggadragga, Goreguts Boss, and plan on building full Commander decks with them in paper
This has synergy in decks outside of equipment decks, especially ones where putting counters on things or tapping things draws you cards