base set box pokemon cards Mega Evolution - ME01 - Mega Evolution home to unique Pokémon and adventures 1999 Pokemon 1st Edition Base

Every card has what's called a color identity. Since your commander is the one leading your build, all of the cards in your deck have to be within your commanders color identity , or colorless cards

Yes, that does mean this makes it easy to turn this into a solid 4/4 beater that can also block, but four mana to get there is a tall ask given the current speed of the format

Yes, you can browse the dedicated section for Tokens/Emblems to find the exact cards required for your gameplay mechanics.

This means you can have preset locations for card elements like energy symbols, type backgrounds, card frames, etc, and then place them into those locations