Commander Legends, the newest set for Magic: The Gathering, has begun its preview season!

Official previews have been rolling out periodically through social media and news websites affiliated with Wizards of the Coast. Today, on day two of previews, we wanted to shine a spotlight on some of the coolest and most exciting card designs from the new set.

#1: Mnemonic Deluge

Originally revealed by Forbes, Mnemonic Deluge is a nine-mana blue card that packs a punch befitting its cost. This card has the potential to be a triple-Time Warp or Time Stretch at only one mana more than the latter. It's also possible to make a disgusting amount of copies of Expropriate over many games.

That said, this card is not going to be limited in application to copying extra-turn spellsThere are so many different spells that could be copied by Mnemonic Deluge—remember, this card utilizes any graveyard, not just your own. This card may turn out to be a triple Tooth and Nail, a trifecta of Warp World, or even three copies of Demonic Tutor, if you're not too scared of the next card on this list....

The cost of Mnemonic Deluge is steep, as it likely ought to be considering its effect, but there are many commanders that can mitigate such a high mana cost. Two that immediately spring to mind are Mizzix of the Izmagnus from Commander 2015 and Kaza, Roil Chaser from Zendikar Rising. Both commanders are firmly in a position to sling high-costing instant and sorcery spells.

Another interesting option is God-Eternal Kefnet. While its cost-reduction is not quite as potent as either of the above two options, God-Eternal Kefnet can allow its pilot to play Mnemonic Deluge an additional time—perhaps more with ample tuning to facilitate that line of play.

#2: Opposition Agent

Opposition Agent was revealed by Gstonegames, and is causing quite a buzz on the internet. It's not only a Rogue, but as a card design it exemplifies the idea of Rogues. For three mana you get a 3/2 body with flash that steals cards from opposing libraries whenever your opponents search those libraries. Your opponents get nothing as a result, but you get cards of whatever parameters were applied during the search. This in itself is oppressive, but that is not all this card can do.

As Opposition Agent gives you full control of an opponent when they search their library, you are granted access to see everything they have hidden from other players—including their hand. Plus, if the opponent has Panglacial Wurm in their library you have the right to spend mana mid-search to cast it.

#3: Rebbec, Architect of Ascension

Bennie Smith, longtime professional writer of MTG content, previewed this card yesterday. Despite simply being an uncommon card in Commander Legends, Rebbec, Architect of Ascension is one of the strongest artifact-based commanders that white has.

This legendary creature gives protection from many different converted mana costs to artifacts you control. This is a simple effect on the surface for a four-mana 3/4 body, but coupled with the fact that it has the partner ability, Rebbec, Architect of Ascension is potentially afforded some offensive capability through the addition of another commander and its additional colors. Some players are already excited play Rebbec alongside a synergistic partner commander like Silas Renn, Seeker Adept, a reprint revealed by Wizards of the Coast today.

These are just three examples of really powerful effects across different rarities in Commander Legends. As it's only day two of previews, we look forward to seeing what else will come of this set!