digimon secret crisis booster box Card Game/【BT-17】Secret Crisis]Kanbara Takuya BT17-079 Foil | Buy from TCG Republic You can win the game by filling the field with Diaboromon Digimon Secret Crisis English

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

Another option is to make your own like I did Im admittedly a little obsessed with the patterns I designed for the Printable Holiday Planner (did you know there are 17 holiday patterns included in back of that kit?!?!), so I printed them, double-sided, onto white cardstock

Key Cards Voltaic Key / Manifold Key - cheap ways to repeat Kilo's trigger

It is the one for which the justification is the most important in order to understand the final grade