***TRIALS RESPONSE***I kind of like what you did here, Otyughs and Gravity shields mix up together in a really nice way. However, the Time part seems too unstable and also unecessary and it also forces you to get to over 30 cards.
So, in my quest to improve your deck, I started by taking out all the Time cards.
Testing showed me that, however, if your combo was somehow stopped (Momentum, PC and high HP creatures, CC and low HP creatures) your deck had more or less no chance to win anymore because of the really slow damage. Seeing how you have a couple of Titans, I hoped you'd have 2 more and made...
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CruncherFlying Titans deal heaps of damage and using catapults they can suddenly end the life of an unsuspecting opponent as they deal a wooping 34 damage when thrown.
If you do not happen to own an extra pair of Titans, I would suggest you to use a Death mark and add some Poisons and keep some (not all) of your Chargers for damage. Howeverm this version of the deck is slightly unoptimal and I wouldn't recommend using it after obtaining said Titans.
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Hopefully this helped, if you need more help though just post and I'm sure me (or many other nice members of the community) will help you immediatly).