The mana curve is very high, so the extra mana from Treasures is crucial for always being able to cast your spells
2 Omnath, Locus Of the Roil Another Temur commander like Animar, when this four-mana Elemental enters the battlefield, it can immediately weaponize Elementals you've previously played, dealing damage to any target equal to the number of Elementals you control
I am a big fan of the Lore (and the Three Kingdoms equivalent version) as they can find a selection of the premium non-basics as well as providing the land untapped
// Bahamut, Warden of Light Legendary Enchantment Creature Saga Dragon 5/5 (As this Saga enters and after your draw step, add a lore counter.) I, II Wings of Light Put a +1/+1 counter on each other creature you control
Sol Ring, Dimir Signet, Arcane Signet help you cast your spells and keep up the pressure
They could stabilize closer to the $7-$8 range, making them a decent buy at $5 if you need a set