Decks in this category are approximately equivalent to preconstructed decks that you can buy at your local game store
If this spell was cast from a graveyard, instead create X of those tokens, where is the number of creature cards in your graveyard
However, if you are playing green already, you might as well sideboard some reach creatures just in case
The biggest draw to Swiss Army Knives is that they help cover bases in several matchups that may otherwise be neglected
I had overloaded the set, and it was believed that milling created some tension that development wanted to lessen
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