Mimic of the Dragon Tale

As an additional cost to cast this spell you
may pay {u}{u}{u}, if you do this spell
gains storm.
When you cast Mimic of the Dragon Tale it
becomes a copy of target spell where X is
that spells converted mana cost. Mimic
of the Dragon Tale has flash as long as
it copies a instant.
Flashback {x}{x}{u}{u}{u}{u}