Saheeli, the Sun's Brilliance | Mana Echoes | Village Bell-Ringer (and one other card)

$the front side of Energy Refractor$

Cards

Saheeli does not have summoning sickness.
({U} magic symbol) ({R} magic symbol) available, plus an additional ({U} magic symbol) ({R} magic symbol) if you control less than three creatures that share a creature type with
Village Bell-Ringer.

Activate
Saheeli by paying ({U} magic symbol) ({R} magic symbol) and tapping it, creating a token copy of
Village Bell-Ringer with haste.
When the token
Village Bell-Ringer enters the battlefield, it and
Mana Echoes trigger.
Resolve the
Village Bell-Ringer trigger, untapping all creatures you control.
Holding priority, if you control less than four creatures that share a creature type with
Village Bell-Ringer, repeat steps 1 through 3 one additional time.
Resolve all
Mana Echoes triggers, adding ({C} magic symbol) for each creature you control that shares a creature type with
Village Bell-Ringer for each trigger resolved this way.
Activate
Energy Refractor twice by paying ({4} magic symbol) , adding ({U} magic symbol) ({R} magic symbol) .
Repeat.

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