I had a similar U/W idea when I posted my R/W Trial/Cartouche deck
I think you could probably get by with just 2 of each Trial, as you won't really have the mana to re-cast multiple bouncing trials. I assume running 3 is mostly to increase your chances of seeing one, since the deck is built around them and meant to be more fun than competitive.
My idea involved using all those recurring enchantments to trigger
Sigil of the Empty Throne, and/or discard/cycling to trigger
Drake Haven.
Had you considered those? It would fit the deck well with defensive/delaying tactics like Reflector Mage, etc
Of course the idea of abusing sigil crosses your mind when building an enchantment-based deck, but those cards are just too slow for the goal of the deck, and they would cause a complete alteration of the deck itself since those are mid-range cards. If you're going the more mid-range route, you'd have to take out most of the 1 drops, add more lands, add more removal, etc. A lot of the cards in the deck are aggressive, and sigil and haven are just too slow.
Maybe, but by that logic if you're going super-aggressive, you may as well make yours a R/W deck. And yes, if going the Sigil route, one would cut the one drops and make it more mid-range/defensive.
This is what I threw together quick but probably needs some refinement;
Creatures (14):2x
Sram, Senior Edificer1x
Jace, Vryn's Prodigy (Digs cards, discard triggers Haven, delay attackers if he flips)
2x
Glory-Bound Initiate (Ignores the drawback of exert if we play white Trial - Becomes quite strong with either of the Cartouches on him)
2x
Auramancer (Enchantment recursion)
2x
Spell Queller (Stall tactic)
3x
Reflector Mage (Stall tactic - and a body for enchantments to buff)
2x
Curator of Mysteries (Cycle to trigger Haven or just a good creature - Plenty of ways to trigger the Scry)
Artefacts (2):2x
Smuggler's Copter (Looting triggers Haven, triggers Sram on ETB)
Instant/Sorcery (2):2x
Hieroglyphic Illumination (Optional card draw or Cycle to trigger Haven)
Enchantments (20): (all fairly self-explanatory)
3x
Cartouche of Solidarity3x
Cartouche of Knowledge2x
Drake Haven2x
Trial of Solidarity2x
Trial of Knowledge2x
Anointed Procession2x
Cast Out 2x
Sigil of the Empty ThroneLands (24):10 Plains
9 Islands
2 Glacial Fortress
2 Prairie Stream
1 Westvale Abbey (why not, since we're spawning tokens [potentially doubled])
Doesn't always work, but fun when it does :]
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