There are 7 retro frame MH3 commons (30.7%), 12 retro frame MH3 uncommons (31.6%), 4 retro frame MH3 new-to-Modern uncommons (10.5%), 2 retro frame commons (8.8%), and 6 retro frame uncommons of cards that first appeared in Modern Horizons or Modern Horizons 2 (15.8%)
The mana simply appears in your pool
Not only that, it changed quite a bit from the mono-black card he originally submitted, and has a confusing design of having first strike but needing to tap it on your turn
I have not found a good solution to the dominance of red as yet
The big line is: All creatures have haste. The moment anything enters, it can attack, whether its yours or your opponents
Some cards may be valuable simply because they are difficult to get