To play a Song card, you can either use the ink in your inkwell or use any character card of matching or higher cost, unless a card otherwise states that it cannot
If youre mostly running weaker creatures, there are likely burn spells that can do more damage for less mana
Raph & Leo, Sibling Rivals A win for Boros decks, when this legendary creature attacks, as long as it's the first combat phase of the turn, it triggers an additional combat phase and untaps one or two attacking creatures
Theyre indestructible, and you can pay four mana to tap another target Creature, which is nice
2 Prince Naveen, Ukulele Player (Alternate Art) - $144.96 Different Verse, Same As The First This Prince Naveen card is identical in terms of play when compared to the standard version but as an Enchanted card, it sports a different art style
There are also a few from Final Fantasy (and maybe Assassins Creed) that could work in the right build