+1: Target permanent doesn't untap during its controller's next untap step.
-2: Ajani Vengeant deals 3 damage to any target and you gain 3 life.
-7: Destroy all lands target player controls.
L:
3
{3}{W}
Armageddon
Sorcery
Destroy all lands.
{4}{R}{R}
Burning of Xinye
Sorcery
You destroy four lands you control, then target opponent destroys four lands they control. Then Burning of Xinye deals 4 damage to each creature.
{3}
Crucible of Worlds
Artifact
You may play lands from your graveyard.
{2}{W}{W}
Day of Judgment
Sorcery
Destroy all creatures.
{8}{R}{R}
Decree of Annihilation
Sorcery
Exile all artifacts, creatures, and lands from the battlefield, all cards from all graveyards, and all cards from all hands.
Cycling {5}{R}{R} ({5}{R}{R}, Discard this card: Draw a card.)
When you cycle Decree of Annihilation, destroy all lands.
{W}
Enlightened Tutor
Instant
Search your library for an artifact or enchantment card, reveal it, then shuffle and put that card on top.
{R}
Lightning Bolt
Instant
Lightning Bolt deals 3 damage to any target.
{0}
Mox Diamond
Artifact
If Mox Diamond would enter the battlefield, you may discard a land card instead. If you do, put Mox Diamond onto the battlefield. If you don't, put it into its owner's graveyard.
{T}: Add one mana of any color.
{6}{R}{R}
Obliterate
Sorcery
This spell can't be countered.
Destroy all artifacts, creatures, and lands. They can't be regenerated.
{W}
Path to Exile
Instant
Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.
{3}{W}
Ravages of War
Sorcery
Destroy all lands.
{2}{R}{R}
Repeated Reverberation
Instant
When you next cast an instant spell, cast a sorcery spell, or activate a loyalty ability this turn, copy that spell or ability twice. You may choose new targets for the copies.
{2}{R}{R}
Roiling Terrain
Sorcery
Destroy target land, then Roiling Terrain deals damage to that land's controller equal to the number of land cards in that player's graveyard.
--
Strip Mine
Land
{T}: Add {C}.
{T}, Sacrifice Strip Mine: Destroy target land.
{W}
Swords to Plowshares
Instant
Exile target creature. Its controller gains life equal to its power.
{2}{W}
Teferi's Protection
Instant
Until your next turn, your life total can't change and you gain protection from everything. All permanents you control phase out. (While they're phased out, they're treated as though they don't exist. They phase in before you untap during your untap step.)