mtg cards with graveyard effects Cube: Legendary Reanimator Grave, 94 cards | Magic:

Sure, you have to deal combat damage with a Dino to pay the prowl cost, but Dinosaurs are all about attacking, so that should be a trivial feat to achieve

(2010-06-15) Gideon Jura's first ability applies during each combat phase of the affected player's next turn (as opposed to applying during the affected player's next combat phase)

Interestingly, this isnt the first time weve seen Magic: The Gathering leaks like this

Instead, they were carefully balanced and play-tested to guarantee that they are on equal footing and no one deck has a clear advantage

Modified is more of a nice bonus for doing something you were already going to do, rather than it being something you would build around specifically