Domain — Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. Exploding Borders deals X damage to target player or planeswalker, where X is the number of basic land types among lands you control.
The basic land types are Plains, Island, Swamp, Mountain, and Forest. Land types other than basic land types (such as Desert) don't contribute to domain abilities.
18-06-2021
wotc
Domain abilities count the number of basic land types among lands you control, not how many lands you control or how many of any type.
01-02-2009
wotc
Exploding Borders will still deal damage even if you don't put a land card onto the battlefield.
01-02-2009
wotc
You do what the spell says in order, so you'll put a new basic land card onto the battlefield before you determine the value of X.
01-02-2009
wotc
Exploding Borders has only one target: the player. If that player becomes an illegal target by the time Exploding Borders would resolve, the entire spell doesn't resolve. You won't get to search for a basic land card.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.