I disagree with mattamort against Reeplcheep.
mattamort:
Thought-knot seer,
Dismember,
Eye of ugin,
Eldrazi temple
Reeplcheep:
Mishra’s Factory ,
Mishra’s Factory,
Rishadan Port ,
Cathedral of War
I get DD for this.
mattamort doesn't win:
Reeplcheep plays Rishadan Port last, so as mattamort's T5 starts, all of
Reeplcheep's lands are untapped and neither Factory is summoning-sick.
Reeplcheep has 12 life and currently no creatures,
so to make progress mattamort would need to attack.
When mattamort does, Reeplcheep taps both other
lands to animate both Factories, and double-blocks.
If mattamort Dismembers a Factory, then in response,
Reeplcheep double-pumps the other Factory.
Regardless of whether mattamort does or doesn't Dismember a Factory,
Thought-knot Seer takes 4 damage and so dies.
That leaves mattamort with no threats.
Reeplcheep doesn't win:
A single Factory can’t _both_ pump and attack, and if
Reeplcheep double-attacks then Cathedral won’t pump, so
Reeplcheep can’t ever attack with more than 4/4 total P/T.
Thus mattamort untaps on mattamort's T3 with at least 12 life,
and then Thought-Knot Seer holds off one Factory while Dismember
holds off another Factory, leaving mattamort with at least 8 life.