Saheeli, the Sun's Brilliance | Mana Echoes | Sky Hussar

(and one other card)

$the front side of Energy Refractor$

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
Sky Hussar.

Activate
Saheeli by paying ({U} magic symbol) ({R} magic symbol) and tapping it, creating a token copy of
Sky Hussar with haste.
When the token
Sky Hussar enters the battlefield, it and
Mana Echoes trigger.
Resolve the
Sky Hussar trigger, untapping all creatures you control.
Holding priority, if you control less than four creatures that share a creature type with
Sky Hussar, 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
Sky Hussar for each trigger resolved this way.
Activate
Energy Refractor twice by paying ({4} magic symbol) , adding ({U} magic symbol) ({R} magic symbol) .
Repeat.