mtg card buying How to Buy Rare Cards Without Overpaying – Ozzie Collectables If you do Guide to Buying Magic Cards:
Description
You may put a land card from among them onto the battlefield tapped

Its got synergies with +1/+1 counters, and you can dump excess mana into it

For example, if you gained 4 life and then lost 7 life this turn, it still triggers

Then encounter again

It also grants ramping and enters-the-battlefield value, and the ability to take back stolen creatures

In today's Commander, there'll be easier ways to deal with a Mirror lock, which was the logic presented by Verhey regarding the unbanning
