There are a few Simic lists in commander, standard and modern formats that may include Tamiyo, Compleated Sage, but Simic has never been dominant for too long in any of these environments

Advanced Search Sets Random Syntax Adaptive Automaton An-Zerrin Ruins And They Shall Know No Fear Arcane Adaptation Banner of Kinship Bloodline Bidding Brass Herald Caller of the Hunt Celestial Reunion Chronicle of Victory Collective Inferno Conspiracy Cover of Darkness Crippling Fear Door of Destinies Engineered Plague Etchings of the Chosen Icon of Ancestry Instruments of War Kindred Dominance Kindred Summons Leyline of Transformation Lifecraft Engine Mirror Entity Avatar Morophon, the Boundless Obelisk of Urd Oko, Shadowmoor Scion Pact of the Serpent Patchwork Banner Plague Engineer Radiant Destiny Raise the Palisade Raise the Palisade Rally the Ranks Renewed Solidarity Riders of Gavony Rukarumel, Biologist Season of Gathering Seshiro the Anointed Avatar Shared Triumph Steely Resolve Storage Matrix Three Tree City Turnabout Vanquisher's Banner

How to survive a Turn 1 / Turn 2 Neo Exdeath An immediate ban of the card seems really unlikely and it would be a shame if the really promising looking Opus XII: Crystal Awakening would be sent into the void by Neo Exdeath
Fetch lands are always highly coveted by players and collectors and the Expeditions in Zendikar Rising are no different
If you can create a good number of Treasure tokens with a card like Mahadi, Emporium Master, you can make a ton of extra and effective creature tokens

Creature (14) 1x Arjun, the Shifting Flame 1x Augur of Bolas 1x Charmbreaker Devils 1x Dragon Mage 1x Galvanoth 1x Goblin Electromancer 1x Guttersnipe 1x Humble Defector 1x Hypersonic Dragon 1x Melek, Izzet Paragon 1x Mindclaw Shaman 1x Nivix Guildmage 1x Talrand, Sky Summoner 1x Young Pyromancer Land (39) Enchantment (1) Artifact (5) Instant (21) 1x Act of Aggression 1x Aetherize 1x Aethersnatch 1x Beacon of Destruction 1x Blue Sun's Zenith 1x Blustersquall 1x Brainstorm 1x Comet Storm 1x Counterflux 1x Desperate Ravings 1x Fact or Fiction 1x Firemind's Foresight 1x Learn from the Past 1x Mirror Match 1x Mystic Confluence 1x Prophetic Bolt 1x Reins of Power 1x Repeal 1x Riddle of Lightning 1x Steam Augury 1x Word of Seizing Sorcery (19) 1x Beacon of Tomorrows 1x Blast of Genius 1x Blatant Thievery 1x Blaze 1x Cerebral Eruption 1x Epic Experiment 1x Faithless Looting 1x Illuminate 1x Meteor Blast 1x Mizzium Mortars 1x Mizzix's Mastery 1x Mystic Retrieval 1x Preordain 1x Pull from the Deep 1x Rite of Replication 1x Sleep 1x Stolen Goods 1x Uncovered Clues 1x Vandalblast
