It could also act as post-launch DLC, similar to what the current mainline games receive
If a red mana you add has certain restrictions or riders associated with it (for example, if it was produced by the last ability of Arena of Glory), they'll apply to that mana no matter when you spend it
If you could get two Frogs on the field, however, you could also play Light and Darkness Dragon mentioned earlier, and some builds would even try Obelisk the Tormentor since 3 tribute materials weren't that difficult, especially with Ronintoadin
Brook saw a lower initial peak than the main trio, leading to a much milder drop over time
From hells heart I stab at thee! 25DB-JP003 Hell Dive Bomber [Infernal Strike Fighter] Level 7 DARK Machine Synchro Effect Monster ATK 2600 DEF 1800 Materials: 1 Tuner + 1+ non-Tuner monsters During the Main Phase 2 (Quick Effect): You can destroy as many face-up monsters on the field as possible, and if you do, inflict damage to your opponent equal to the combined original Levels of those destroyed monsters x 200
Despite its powerful effect, it does not affect the user's monsters, making it a one-sided field-clearing card