Vedalken Orrery

You may cast spells as though they had flash.

Drumbellower

Flying
Untap all creatures you control during each other player's untap step.

Paradise Mantle

Equipped creature has "{T}: Add one mana of any color."
Equip {1}

Twinflame

Strive — This spell costs {2}{R} more to cast for each target beyond the first.
Choose any number of target creatures you control. For each of them, create a token that's a copy of that creature, except it has haste. Exile those tokens at the beginning of the next end step.

Annie Flash, the Veteran

Flash
When Annie Flash, the Veteran enters, if you cast it, return target permanent card with mana value 3 or less from your graveyard to the battlefield tapped.
Whenever Annie Flash becomes tapped, exile the top two cards of your library. You may play those cards this turn.

Seedborn Muse

Untap all permanents you control during each other player's untap step.

Dualcaster Mage

Flash
When Dualcaster Mage enters, copy target instant or sorcery spell. You may choose new targets for the copy.