If unspent mana has any restrictions or riders associated with it (for example, if it was produced by White Lotus Hideout), those restrictions or riders will remain associated with that mana when it becomes red
6 Screaming Nemesis A Tricky But Powerful Ability That May Change Removal Suites Screaming Nemesis has the potential to take over a game when employed in aggressive Red strategies, with one caveat - it really needs to be dealt damage to be worth including at all
Sidar Kondo of Jamuraa lets you get attacks in while token generators fill your board of small tokens that will pelt away at opponents
This is a good card that should just be too slow for what it does to be viable in any refined (non-speciality) cube
This means if players wanted to upgrade it to be more competitive, they would already have a good land base and some token deck staples like Eternal Witness and Rootborn Defenses
Maybe you find a willing ally to take 1 damage, so you can get a dragon that attacks their enemy