Number crunching, which I do often for those big data stories, is via Microsoft Excel, DataGrip for MySQL, and Tableau
If you were to have a land type count as that color instead, you would allow Mtenda Lions and such, but disallow many more things
It sounds expensive, but could be incredibly useful in slowing down an enemy by temporarily taking out threats such as creatures with lots of counters on them, or by doing it to your own permanents to retrigger entry effects
Since they are cheap, you can often cast what you drew too
The Pokemon this card is attached to (except Pokemon with any Abilities) takes 20 less damage from your opponents Pokemons attacks
Bury the hatchets, it is time for a war between the two biggest trading card games in the entire world with Yu-Gi-Oh