Summon the Storm

You may cast your commander from the
Command Zone for its converted mana cost.
When you do, it gains Haste and the emblem:
"As long as you control your commander,
Instant and Sorcery cards in your graveyard gain
Flash and Flashback until the end of turn. The
flashback cost is equal to their converted mana
cost." Your commander returns to the
Command Zone during the end phase.
Flashback {1}{u}{r}{w}