The first Commander 2019 spoilers are underway, with the reveal of four commanders for preconstructed decks built around MTG mechanics.
Each of the decks is designed around a specific mechanic—Madness, Flashback, Populate, and Morph. In addition, every preconstructed deck will include a reprinted planeswalker.
Madness

Madness is paid with cost (such as mana). It’s like a warped version of Spectacle in Standard.
“If you discard this card, you may cast it for its madness cost instead of putting it in your graveyard.”
Flashback

Flashback is all about casting cards from the graveyard.
“You may cast this card from your graveyard for its Flashback cost, then exile it.”
Populate

Flooding the board and going wide with tokens, Populate increases your board state by making a copy of a creature token you control.
“Put a token onto the battlefield that is a copy of a creature token you control”
Morph

Morph is all about ramping creatures onto the battlefield by reducing the initial spell cost.
“You may cast this face down as a two/two creature (for three). Turn it face up anytime for its Morph cost.”
Reprint planeswalker Seedborn Muse

The four MTG preconstructed decks—Faceless Menace (Kadena, Slinking Sorcerer), Mystic Intelect (Sevinne, the Chronoclasm), Primal Genisis (Ghired, Conclave Exile), and Merciless Rage (Anje Falkenrath—are set to release with Commander 2019 on Aug. 23.
Other Gen Con Commander 2019 spoilers
The reveals for Commander 2019 continued to flow in over the weekend at Gen Con with cards like Gerrard, Weatherlight Hero and K’rrik, Son of Yawgmoth.
Gerrard, Weatherlight Hero

K’rrik, Son of Yawgmoth

Yawgmoth had a son? Rumor has it that K’rrik is in the preconstructed Commander 2019 Madness deck.
Animar, Soul of Elements

Ruhan of the Fomori

Sanctum of Eternity

Leadership Vaccum
