It likes to let other people grab a slice before it helps itself
For example, if your commander has the ability to gain a lot of life, you might build a Commander deck with cards that benefit from maintaining as high a life total as possible, and focus on out-enduring your foes - or you might use your life total as a resource, burning through it to fuel powerful abilities and relying on your commander to keep yourself from succumbing
If you decided on 16 like I did, youd add the other filler playable as a 24th card, which for me was Light the Way
Craterhoof Behemoth has a number of effective replacements, including Overwhelming Stampede or the classic Overrun
Remember from The Basics that this means it requires two total mana to cast, one from a Swamp and another from any other source
As we saw earlier, Magic s borderless cards are notionally in 5:7, but are functionally more like 8:5 because artists dont tend to represent important elements in the bottom of the frame