at the time of the release, there was a lot of hype surrounding the Charizard V and the Chazizard Vmax
banish 1 monster with 1500 ATK/2100 DEF from your hand, your GY, or face-up on either field, and if you do, the targeted monster gains 1500 ATK
I suppose these decks could come with effects that let you put non-legendary creatures into your command zone during play, to help meet most of our conditions, though that raises even more questions about playing them and whether they become commanders or not
Also, and this is the main bit, they have storm
The best way is to playtest with it
If your opponent controls an Attack Position monster: You can banish this card from your GY, then target 1 Fish, Sea Serpent, or Aqua monster you control