I probably drew 8 to 10 cards over multiple turns from using Shimmer Dragon's ability, so it definitely made a big difference in the game
You could copy your Sol Ring a few times as a ramp option, or make it harder to interact with by enchanting Darksteel Citadel
Sauron, the Necromancer Sauron, the Necromancer can not only cheat out good effects from big creatures in your graveyard, but youll get to keep the copy if its your Ring-bearer
Historic-matters, which is in Esper colors, does a good job of underscoring this
Aberrant Abundant Growth Academy Elite Aerial Extortionist Aesi, Tyrant of Gyre Strait Aether Channeler Agent's Toolkit Alchemist's Vial All-Seeing Arbiter Alquist Proft, Master Sleuth Altar of the Wretched Angelic Gift Angelic Sell-Sword Antique Collector Arcades, the Strategist Architects of Will Archon of Cruelty Arcum's Astrolabe Armed with Proof Armorcraft Judge Arterial Alchemy Ascent of the Worthy Assassin Gauntlet Astral Wingspan Autograph Book Axiom Engraver Ayara, First of Locthwain B.O.B
Its worth noting that this can trigger Up the Beanstalk even when cast for three, so it could see play alongside Rides End for that reason