Taking Messiahs to Toronto BWC critique me hard!

So my deck list for right now is looking like:

G0

SV Spawn of the Spiral Nebula

4x Heal

4x Beloved Child of Superstring Theory Draw

4x Paradigm Shift Dragon Crit

4x Blink Messiah Crit

G1

4x Cosmo Wreath PG-G

3x Destiny Dealer Stride Fodder

3x Sacrifice Messiah

3x Providential Child of Gravitational Collapse

1x Dark Metal Chameleon

G2

4x Arrestor Messiah

3x Awaking Messiah

4x Lady Battler of the Gravity Well

G3

4x Alter Ego Messiah

4x Freezeray Dragon

G4

3x Amnesty Messiah

2x Excelics Messiah

2x Trans-Else Messiah

4x Big Crunch

1x Sebreeze

1x Scryew

3x Maxwell

EDIT: Cut one Amnesty and Excelics to run 2 more Big Crunch for control. Also usually run 4 Destiny Dealer and 2 Lady Battler of the White Dwarf to make Gravity Well a huge column but I feel like in a best of one I need the early card draw more for when I'm on Freezeray and not actually using Alter Ego GB2 yet. Cut a Sacrifice Messiah for 1 Dark Metal Chameleon so I always have a target to lock that can't be targeted or hit by Crunch/Root Flare.

Also I know people usually Blizza flip Amnesty on first stride to make Excelics live but especially since I play Freezeray first striding Amnesty gives me more pressure plus the ability to use any Blink Messiahs or Arrestors while I'm still trying to transition to the typical late game combos. This is also the reason I switched Neon Messiah to Spawn as my starter. I was no longer having issues seeing cards plus Spawn not only gives me great control options, but helps meet the required number of cards to unlock.

Please though critique away! 😊