Pre-amble
So I am currently building a Blue & White Prowess + Heroic deck in Standard. The idea that I can boost my heroic creatures with instants and auras and reap the benefit across all my prowess creatures.
Possible combo
I'm interested to know if the below combination will work. The Lotus-Eye Mystics would be in the graveyard, and then I would play Rally the Ancestors. In an ideal scenario the Rally the Ancestors would trigger the Lotus-Eye Mystics Prowess because it's an instant. Then I can return an enchantment aura back to my hand also.
Assumption
I am assuming that Prowess has to be on the battlefield for the effect to trigger, which means that Rally the Ancestors would return the Lotus-Eye Mystics to the battlefield, but because they were in the graveyard when the instant was cast, the Prowess effect cannot trigger.
Is my assumption correct?
[mtg:Card Name]
. It will automatically create links to the Gatherer, just like this: Rally the Ancestors. Also, when discussing a mechanic, you can assist answerers by linking to MTGSalvation's page on that mechanic. The syntax is easy:[Prowess](http://mtgsalvation.gamepedia.com/Prowess)
. Finally, you might be interested in seeing how U/W Heroic is holding up in the big tournaments.