They offer versatile deck building options, consistent performance across different areas of the game and power ceilings which border on unbeatable
However, it's that extra ability which really makes this sing - kill your opponent's best stuff and take it for yourself
The most iconic lands into Swamps card is of course Urborg, Tomb of Yawgmoth
If you're playing against an aggressive deck, indestructible gives you a great blocker that can survive throughout the game
If your Commander doesnt draw you cards, reduce your mana outlet, and make you a sandwich, then you should really consider how to make sure your deck can run consistently without guaranteed access to smoothing in the Command Zone
If we can attack with 10 creatures and give each one +20/+20, we should be able to knock out a few of our opponents, though sadly he won't give them trample