Green is the best individual color in the color pie at performing this task, as it provides ample ways to put extra lands onto the battlefield from your hand or deck as well as efficient ways to add extra mana to your mana pool via creatures, enchantments, and artifacts
You get to steal an opponents Monster without having to give up anything on your end, and the only downside is that you have to give it back during the End Phase, but by then youve already used their Monster as material
It runs enough legendary creatures to make Legolas work, so it can ensure some card draw in the process
Abzan Ascendancy walks the line and is basically a textbook C

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in these regions, distributors of the game run tournaments