You then just need to click on Redeem Code, which is in the top-right of the page
Many Commander players and cube designers also use double-sided cards for token systems, upgraded creatures, alternate commanders, and custom mechanics where gameplay changes dynamically during matches
Part of the reason Im being a stickler about this distinction is that there are actual MTG rules about what it means to move a counter, and some niche interactions pop up when you compare moving counters to removing a counter from one thing and putting a counter elsewhere. I can also see a future where we get rules text that references whenever you move one or more counters, which would require precise text on the card
There are many helpful tips and reminders all over in case you forget something
It can be blocked by green creatures, though
What are metal Pokemon cards