Plains

Ancient Runes

At the beginning of each player's upkeep, Ancient Runes deals damage to that player equal to the number of artifacts they control.

Flying
Whenever Numot, the Devastator deals combat damage to a player, you may pay {2}{R}. If you do, destroy up to two target lands.

Whenever an opponent casts a creature spell, Soul Barrier deals 2 damage to that player unless they pay {2}.

All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {2}."