So I actually got the infinite combo naturally in Ascension RotF vs. AI. I was going to see if I could break 9999 (or at least run the AI to a deck of 0 cards) but Sadranis bugged out when I was trying to recur Duke of Lies, so I tried to quit and reenter the game but it brought up the score screen instead :(
For those of you not in the know, the combo is Tablet of Time’s Dawn, Reclamax, a way to make all constructs into Mechana (Hedron Link Device or Dimension Diver), and either Rocket Courier X-99 or a hell of a lot of card draw to use the Tablet before ending your turn.
My deck was the following (yes, I had every construct in the game in my deck >_>):
Adayu, the Chosen Askara of Fate x2 Master Dhartha Seer of the Forked Path x3 Twofold Askara Dartha's Retreat The All-Seeing Eye Tablet of Time's Dawn Dandelion Witch Flytrap Witch x2 Landtalker Lifebound Initiate x3 Lunar Stag x3 Nairi, Henge Queen Wolf Shaman x3 Serpentcall Snapdragon x2 Stone Circle x2 Yggdrasil Staff x2 Burrower Mark II x2 Combustion Idol x2 The Grand Design x2 Hedron Cannon Hedron Link Device Project Alpha Reclamax x2 Rocket Courier X-99 x2 Socket Altar x2 Watchmaker's Altar x2 Sadranis, Dark Emissary Black Hole Muramasa Shadow Star x2 Voidthirster x2