commander · Kaust, Eyes of the Glade
Deadly Disguise (MKC).
A Naya morph and disguise deck led by Kaust, Eyes of the Glade, cast creatures face-down, flip them for surprise value, and grow a counter-laden board through morph trigger payoffs.
The Commanders
Deadly Disguise is a Naya morph and disguise deck from Murders at Karlov Manor. Kaust, Eyes of the Glade pays you off for playing creatures face-down and then turning them face-up. Morph and disguise mean your opponents never know what your 2/2s are until you flip them, and that uncertainty is the whole point. Add payoffs that hand you counters or value on every morph trigger and you keep a threatening board while the table has to guess what's under each card.
Kaust, Eyes of the Glade gives you counters and payoffs whenever you turn creatures face-up. Every morph trigger under him does something: a +1/+1 counter, a card, or another bonus depending on how you build. Most Kaust decks run Scroll of Fate, which puts cards from the top of your library onto the battlefield face-down, so you keep a steady supply of face-down threats that flip for free. His best trait is the surprise itself. Nobody can safely block your 2/2s when any of them might be a bomb.
Key Cards
Deathmist Raptor
A morph creature that keeps bringing itself back. Deathmist Raptor is a 3/3 deathtouch morph that returns from your graveyard to the battlefield face-down whenever any other permanent you control is turned face-up. So every time you flip a morph creature, the Raptor comes back from the graveyard, ready to flip again for another trigger. In a morph deck that's a recursion loop that never really ends, and Kaust cashes in on every return, which makes the Raptor one of the best cards in the precon.
Den Protector
Eternal Witness stapled to a morph creature. Den Protector is a morph creature that returns any card from your graveyard to your hand when you turn it face-up. That's Eternal Witness on demand: grab back the best spell you've cast all game, or the removal you need right now. It also has hexproof as long as it's your only hexproof creature, so it's hard to kill before you're ready to flip it. As long as Den Protector is around, you rarely run out of the spells that matter.
Hooded Hydra
A morph creature that enters with +1/+1 counters and leaves tokens behind when it dies. Morph Hooded Hydra face-down for three mana, then flip it for X mana to put X +1/+1 counters on it. When it dies, it makes a 1/1 Snake token for each +1/+1 counter it had. A seven-counter Hydra dies into seven 1/1 Snakes, so a removal spell just hands you a board. Kaust piles on extra counters from morph triggers, so the Hydra usually leaves behind an even bigger Snake army.
Trail of Mystery
The best morph support enchantment in the deck. Trail of Mystery makes your first face-down creature each turn cost two less, and it lets you search your library for a basic land whenever a creature turns face-up. Every flip fetches a basic, so your morph engine ramps you for free. Flip two or three creatures in a turn and you've found two or three lands, which pays for the next round of face-down plays.
Whisperwood Elemental
End-step tokens plus a strong sacrifice ability. Whisperwood Elemental makes a face-down creature token at the end of each of your turns, so you get free morph fodder every turn cycle. When it dies, you can sacrifice it to manifest the top card of each player's library face-down under your control. That's insurance against a board wipe and a possible bomb at once: you might manifest a free titan or a game-ender off an opponent's deck. Every one of those end-step tokens also flips for a Kaust trigger.
Mastery of the Unseen
Manifest every upkeep for four mana, and gain life whenever a face-down creature turns face-up. You can pay two mana to turn a manifested creature face-up if it's a creature card, which can drop an Eldrazi titan or another game-ender straight from your library without paying its mana cost. The life gain from all that flipping keeps you comfortably ahead in a deck that turns cards face-up constantly. It's the most reliable ongoing morph engine here.
How to Play
Early on you want Kaust in play as fast as you can, ideally turn three, then fill the board with face-down creatures on turns four and five. Each one is a 2/2 nobody can safely block until they know what it is. Get Trail of Mystery down before you start flipping so you catch every free land from the morph triggers.
By the mid-game your board is a wall of unknowns. Opponents can't attack into it or block your swings without walking into a Deathmist Raptor or Hooded Hydra flip. The Raptor's loop keeps handing you Kaust triggers as long as any other morph is flipping. You win in combat with a team of counter-loaded creatures grown through Kaust, or you flip Hooded Hydra into a huge Snake army and start a two-turn clock.
