This is a combo deck based on a handful of different ariticles on tcgplayer.com and some youtube videos from MtGGoldfish and others. My card choices are pretty different in a bunch of places, but the combo is lifted from these other peoples' work. If you google up "Shapeshifter Combo", you'll find something older than this, and probably more streamlined. ANYWAYS.
Here's MY deck.
This is a 4 card combo deck which seeks to survive until around turn 6 or 7, then win outright in one lengthy series of interactions. It can happen on 4 or 5, but that requires a lot of luck, and isn't very realistic.
Harald Unites the Elves
+
Moritte of the Frost
comprise the key interaction, although we need two copies of
Moritte of the Frost
to assemble the machine. The third distinct card, and the last card in the combo, is
Thassa's Oracle
, of which we need one copy. It works thusly. With
Thassa's Oracle
in play, we play
Harald Unites the Elves
. Whether by luck or design, we will have
Moritte of the Frost
in the 'yard to come back from
Harald Unites the Elves
. Moritte will copy the saga, milling three more cards, and returning another copy of
Moritte of the Frost
to the battlefield, which will copy the NEW
Harald Unites the Elves
which is legendary. When the two legendary sagas see each other, we will have to sacrifice one of them, and the other will trigger...milling three cards...and returning
Moritte of the Frost
to play...which will copy the legendary copy of
Harald Unites the Elves
...ad infinitum, or at least until our deck is completely depleted. After the library counts zero, we copy the saga one more time. In this last iteration, however, the final
Moritte of the Frost
will target
Thassa's Oracle
, good game.
The rest of the deck is a whimsical pile of shapeshifters, and some self mill utility cards to help find the pieces.
Bala Ged Recovery
is probably the most notable spell outside the combo, as it allows us to return and accidentally milled
Thassa's Oracle
. I only have one, and I'm stingy. So.
The Binding of the Titans
fills the yard, and gets back
Thassa's Oracle
.
Mire Triton
mills, stalls, and clogs the board with scary deathtouch (ooOOOOooo!).
Binding the Old Gods
solves most problems, and extinction event often solves the rest. The shapeshiters are nice targets when
Harald Unites the Elves
whiffs, and the
Masked Vandal
is excellent against
Banishing Light
and sagas. In general, the shapeshifters all have big enough bodies or worthwhile ETB effects, which make them good on-curve plays, and good end-of-turn targets for
Thassa, Deep-Dwelling
. The singleton
Lurrus of the Dream-Den
is mostly to play back
Thassa's Oracle
, but there is a surprising amount of value from replaying the two-drop shapeshifters as well.