Note that you can search for any land card with the specified land type, not only basic land cards
If you want to build a particular deck, all you have to do is upload or import the decklist into Arena's deck builder or put the deck together yourself
You could then use Thran Temporal Gateway to put them onto the battlefield on the cheap, get zippy with Blackblade Reforged with a side of Heros Blade, and do something absurd with Helm of the Host
No one seems to be regulating Lorcana playmat size right now, but Ravensburger sells plenty of official ones, so we can tell you their average size
At the start of every turn, players place all cards back in the ready position, set any played characters (which are moved to a different row) back with the items and other characters, and then draw the top card from the deck to add to your hand (the player going first does not do this part on the first turn)
MAKE IT YOUR OWN