Despite being a removal spell, you typically want to target one of your own creatures to get two copies of it
Full Decklist: 2 Island 2 Mountain 2 Swamp Arcane Signet Ashad, the Lone Cyberman Auton Soldier Blasphemous Act Blink Canyon Slough Choked Estuary Clockwork Droid Command Tower Commander's Sphere Creeping Tar Pit Crumbling Necropolis Cult of Skaro Cyber Conversion Cyberman Patrol Cybermat Cybermen Squadron Cybership Dalek Drone Dalek Squadron Darkwater Catacombs Davros, Dalek Creator Day of the Moon Death in Heaven Delete Don't Blink Doomsday Confluence Dragonskull Summit Drowned Catacomb Ensnared by the Mara Exotic Orchard Exterminate
Ancient Cornucopia One of my favorite cards to run in multicolor decks due to its ability to stabilize, Ancient Cornucopia gives you steady lifegain whenever you cast a multi-color spell while also fixing your mana
The Crab and Reins of Power are generally useful and tricky blue cards most any deck can use
In addition, cards like Spirit-Sister's Call from Neon Dynasty and Starfield of Nyx from Magic Origins can also help bring back Shrines if they leave the battlefield
Creatures that die go to the graveyard while cards go to exile when a card says so