These are gold overlays on MH3 basics - they're the cool ones with the eldrazi on them!
You can choose a set of 5 (WUBRG) or select individual lands.
All of my alters are shipped in toploaders.

Recommended care:
I recommend keeping all my alters double sleeved during play to protect them from wear/dirt.
If your alter has foil embellishments, it is especially important to be careful when sleeving/unsleeving so the foil doesn't get damaged or peel away from the card.
Your alter will come in a brand new perfect fit so you don't have to worry about finding one!