Cloudstone Curio | Phyrexian Altar | Chancellor of the Forge

Cards

Chancellor of the Forge in hand.
Cloudstone Curio and
Phyrexian Altar on the battlefield.
Your control at least six creatures.
({4} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) available.

Cast
Chancellor of the Forge by paying ({4} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) .
When
Chancellor of the Forge enters the battlefield, it and
Cloudstone Curio trigger.
Resolve the
Cloudstone Curio trigger, choosing to return nothing to your hand from the battlefield.
Resolve the
Chancellor of the Forge trigger, creating a number of 1/1 Phyrexian Goblin creature tokens with haste equal to the number of creatures you control.
When the Phyrexian Goblins enter the battlefield,
Cloudstone Curio triggers that many times.
Resolve the first
Cloudstone Curio trigger, returning
Chancellor of the Forge to your hand from the battlefield.
Resolve all remaining
Cloudstone Curio triggers, choosing to return nothing to your hand from the battlefield.
Activate
Phyrexian Altar seven times by sacrificing seven Phyrexian Goblins, adding ({4} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) .
Repeat.
If you control at least seven creatures when
Chancellor of the Forge enters the battlefield, this combo will net infinite colored mana.