Invasion of the Dark Empire (BT17-129) - Ultimate Squad

[Activate:Battle] If your Leader Card is black : Play up to 2 Demon Realm Soldier Tokens in Rest Mode, then choose up to 1 of your black cards and it gets +10000 power for the battle. (Demon Realm Soldier Tokens have 5000 power, 0 combo cost, and 5000 combo power.)