This deck was played on Jeff Hoogland's stream the other day, and I think it could have potential. Playing moxes always is good, and all these cards have a lot of synergy. I don't think they deck is there yet when it comes to competitiveness, but it seems like it has potential.
I think Metallic Rebuke's a good card for Sai, but i feel that this deck is more proactive than reactive. Remand I think is better here because of that
2 Inspiring Statuary
3 Mishra's Bauble
2 Mox Amber
4 Mox Opal
3 Ichor Wellspring
2 Engineered Explosives
4 Pentad Prism
Spells
4 Paradoxical Outcome
2 Remand
4 Serum Visions
4 Path to Exile
4 Monastery Mentor
3 Sai, Master Thopterist
Lands
2 Plains
1 Academy Ruins
1 Cavern of Souls
4 Darksteel Citadel
3 Island
1 Flooded Strand
3 Glimmervoid
2 Spire of Industry
2 Seachrome Coast
2 Alpine Moon
2 Echoing Truth
2 Erayo, Soratami Ascendant
2 Ethersworn Canonist
1 Wrath of God
3 Relic of Progenitus
2 Settle the Wreckage
1 Dispel
URStormRU
GRTitanshift[mana]RG/mana]
URStormRU
GRTitanshift[mana]RG/mana]