Temmet comes equipped with useful keywords to make it a great attacker on its own that's harder to block
The previous owner was extremely private, and its existence was only a rumor, he continued
For one, it doesn't enter the battlefield tapped, but more importantly, there is an option outside its mana fixing ability
Then put those cards onto the battlefield under your control

Abyssal Harvester Adagia, Windswept Bastion Adorned Pouncer Altar Ibn-La'Ahad Angel of Sanctions Anikthea, Hand of Erebos Anointer Priest Applied Geometry Arboreal Alliance Arcane Artisan Ardyn, the Usurper Arna Kennerd, Skycaptain Artificer Class Ashling's Command Ashling, the Limitless Assemble from Parts Auton Soldier Aven Initiate Aven Wind Guide Awaken the Maelstrom Back from the Brink Banshee of the Dread Choir Battle for Bretagard Benthic Anomaly Biowaste Blob Blade of Selves Bloodforged Battle-Axe Blue Sun's Twilight Bramble Sovereign Brenard, Ginger Sculptor Brigid's Command Broodbirth Viper Cabaretti Confluence Cackling Counterpart Cadric, Soul Kindler Calamity, Galloping Inferno Calix, Guided by Fate Caller of the Pack Caller of the Untamed Caretaker's Talent Caught in a Parallel Universe Champion of Wits Chandra, Flameshaper Chrome Dome City of Death Clone Legion Cogwork Assembler Coiling Rebirth Colorstorm Stallion Compy Swarm Conclave Evangelist Copy Catchers Corporeal Projection Council of Reeds Coursers' Accord Court of Vantress Croaking Counterpart Cursecloth Wrappings Cybermen Squadron Dalek Squadron Dance of Many Delina, Wild Mage Determined Iteration Dino DNA Dollhouse of Horrors Donatello, Gadget Master Dreadfeast Demon Dreamstealer Druid's Deliverance Dual Nature Duke Ulder Ravengard Dutiful Replicator

You do not need complicated combos or tricky setups just a board of Dragons and a clear attack step