Brudiclad, Telchor Engineer Here we have Brudiclad, Telchor Engineer, an artificer commander that gives all your creature tokens haste in addition to generating 2/1 artifact tokens at the beginning of combat on your turn
Crashing Footfalls, Elementals, and Bring to Light Scapeshift all have few turn one plays, so they can stand to fetch a Triome on turn one and start setting up their mana
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That said, you can pack your deck with Hyena Umbra, Spirit Mantle and Aura-based removal like Darksteel Mutation, Chains of Custody and Ossification to get your card draw up for Sram
Fungal Shambler D+ Another card that's hurt by it's high CMC, Fungal Shambler also suffers from a relatively low toughness for EDH considering that mana cost
Keep in mind that everything after this point is all speculation, nothing official has been released