Big Praxis Sentinels

Hey everyone. Here is my take on a Big Praxis ramp-style deck. I got the shell of this idea from AhornDelfin but I made some changes to make the deck even better, in my opinion. This deck is both incredibly fun and super powerful. I have been handily beating most other decks in Masters all day. I must admit, the deck is a tad on the expensive side and I honestly wouldn't try it with other cards. The synergies in this deck are somewhat obvious but the ones that really make the deck OP are:

1) Mystic Ascendant + Worldbearer Behemoth ... holy crap is this combo absurd.
2) Monolith Guardian + Power Stone ... turn 3 7/7... I think I need say no more.
3) Ancient Defenses + Novaquake Titan... not relevant every game but once this nifty little torch on a stick turns your heart of the vaults into 8/6s, you can start dropping Titans on 8... which in almost all cases just ends the game on the spot.
4) Great-Kiln Titan ... yup this guy is a walking combo all by himself. If you haven't tried him yet but have access to the shiftstone, craft him. You won't regret it, I promise. He is insane.

Then of course, you have Praxis staples like Sandstorm Titan and Heart of the Vault doing what they've always done.

Two other quick notes:
1) Trail Maker may seem like a weak little ramp body that dies to things like torch but let me tell you... when you need to ensure you have FFFTTT by turn 5 (usually) for Heart, you will be so happy this guy is in your deck.
2)Secret Pages is the only card I am unsure about in this deck. Sometimes its ramp seems really nice in the deck but sometimes it feels like you almost just don't need it. It's possible this should be some combination of Purify or maybe Gear Master. I also wonder if one or two Lavablood Goliath wouldn't be crazy good with Ancient Defenses in the deck. I might try these thing and report back. Also, if anyone tries the deck and likes it please leave feedback below and maybe we can make this deck T1 (if it's not already).

Thanks y'all!

EDIT: Based on some feedback from Reddit, I switched Ancient Defenses to Family Charter and it's been brilliant. Still gives the needed relic for Monolith and not awkardly at 4 mana now, while providing later game card draw to keep feeding the engine!