First, there was the Modern-targeted version, March of the Multitudes , which came out with a whopping $75.00 MSRP
From the point of view of game balance, it would be really cool to be able to see effects of items like Bill, Pokeball, Revive and others, being side effects of attacks! Oops
If you play Friends or have a character sing the song, the card text is just Draw 2 cards meaning you have to draw two cards, and will lose the game
If I cast Akroan Crusader for my first nonland permanent and then cast Giant Growth on it, the 1/1 token is made on casting, regardless of whether the spell is countered or not
It doesn't matter if that player left the game, if that creature left the battlefield or left your control, or if that creature no longer has a matching type