I have played with this card in Modern, and the reanimation benefit later in the game is always a better play than this becoming a copy of that card until end of turn
Utilizing black, red, and white means Kaalia has access to almost every Demon card
If you're playing a Tribal deck and casting a seven CMC spell, you really can't do much better than Haunting Voyage
Pay 10 life or 5 red mana to pump +5/+0 onto Ur-Dragon
Because these cards cant protect combos or force through wins, however, they lack the competitive chops of the above big hitters
Though less impressive, the Moonlight Shuriken attack, which Radiant Greninja holds, is also powerful, dealing 90 damage to any two Pokmon