Brudiclad, Telchor Engineer + There and Back Again + Hellkite Charger

Brudiclad, Telchor Engineer

There and Back Again

Hellkite Charger

How it works

1. At the beginning of your precombat main phase, There and Back Again triggers, creating a legendary 6/6 Smaug creature token, and causing you to sacrifice There and Back Again.
2. At the beginning of your combat phase, Brudiclad triggers, creating a 2/1 Phyrexian Myr artifact creature token, then causing all tokens you control to become copies of the Smaug token.
3. Put all but one Smaug token into your graveyard due to the legend rule.
4. When the Myr dies, it triggers, creating fourteen Treasure tokens.
5. Declare Hellkite Charger as an attacker, triggering its ability.
6. Holding priority, activate seven Treasures by tapping and sacrificing them, adding 5.
7. Resolve the Hellkite Charger trigger, causing you to pay 5 to untap all attacking creatures you control and to get an additional combat phase after this one.
8. Repeat from step 2 each combat phase.