RUw Midrange Tempo (?)

[Timendy]

RUw Midrange Tempo (?) 75 cards, 15 sideboard 4 {Island} 2 {Mutavault} 5 {Mountain} 4 {Sacred Foundry} 4 {Steam Vents} 4 {Hallowed Fountain} 23 lands 4 {Boros Reckoner} 2 {Spellheart Chimera} 2 {Guttersnipe} 3 {Omenspeaker} 4 {Young Pyromancer} 15 creatures 2 {Lightning Strike} 4 {Mizzium Mortars} 4 {Syncopate} 1 {Detention Sphere} 2 {Ral Zarek} 4 {Azorius Charm} 2 {Boros Charm} 1 {Izzet Charm} 2 {Jace, Memory Adept} 22 other spells Sideboard 3 {Act of Treason} 1 {Steam Augury} 2 {Blind Obedience} 3 {Detention Sphere} 2 {Pithing Needle} 4 {Wear // Tear} 15 sideboard cards

[DylanW18]

I think {Jace Memory Adept} should be in SB. And where is {Ætherling}?

Personally, {Jace Architect of Thought} should be in MB, then side in Memory adept against a control mirror match