Luxurious Locomotive | Ruthless Technomancer | Port Razer (and two other cards)

Haste Enabler

Cards

You control at least five creatures, excluding
Port Razer, that have total power 1 or greater.
An opponent cannot block and kill
Port Razer or
Luxurious Locomotive.
There are at least four card types among cards in your graveyard.

Activate
Luxurious Locomotive's crew ability by tapping five creatures you control with total power 1 or greater, causing
Luxurious Locomotive to become an artifact creature until end of turn.
Declare
Luxurious Locomotive and Port Raazer as attackers, triggering
Luxurious Locomotive, creating at least five Treasure tokens.
Deal combat damage using
Port Razer, triggering its ability.
Holding priority, activate
Ashnod's Altar by sacrificing
Port Razer, adding ({C} magic symbol) ({C} magic symbol) .
Resolve the
Port Razer ability, untapping all creatures you control and causing you to get an additional combat phase after this one.
Activate a Treasure by tapping and sacrificing it, adding ({B} magic symbol) .
Activate
Ruthless Technomancer by paying ({2} magic symbol) ({B} magic symbol) and sacrificing four Treasures, returning
Port Razer from your graveyard to the battlefield.
Repeat from step 2 each combat phase.

This combo has been estimated to be Exhibition (Bracket 1+).