Players may use any of the cards includedexcept the Birds of Paradise as "Paradise Chocobo" promo card, which may not be used in deck construction
A lot of balance and care goes into choosing the cost of a card, more than I can express here, but looking for similar effects on existing Magic cards can give you an idea of a fair costfor example, a ramp spell that puts two lands into play ought to cost 4 mana, per Explosive Vegetation
Magic has seen at least one cat that has no problem going to the graveyard (remember that Cauldron Familiar that needed to be rebalanced?)
Im aware that some of these cards have uses, but its much harder to make a list out of Modern than pre-Modern, so it cant be an entirely useless list
(2025-11-17) If damage dealt is being divided or assigned among multiple permanents or players, that damage is divided or assigned before any effects modify how much damage would be dealt