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
Here are the best methods: Check Online Marketplaces Websites like eBay, TCGPlayer, and Cardmarket are great for checking real-time prices
Creature - Avatar Color tag templates(None) Farhaven Elf When this creature enters, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle
Simple answer: yes, yes you can play more than the minimum deck size
Snow White, Unexpected Houseguest can get the ball rolling on playing these dwarfs with her ability How Do You Do?, which makes every dwarf card cost one fewer ink to play
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