+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
{X}{G}
Animist's Awakening
Sorcery
Reveal the top X cards of your library. Put all land cards from among them onto the battlefield tapped and the rest on the bottom of your library in a random order.
Spell mastery -- If there are two or more instant and/or sorcery cards in your graveyard, untap those lands.
{2}{G}{G}
Bear Umbra
Enchantment - Aura
Enchant creature
Enchanted creature gets +2/+2 and has "Whenever this creature attacks, untap all lands you control."
Totem armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)
{1}{G}
Explore
Sorcery
You may play an additional land this turn.
Draw a card.
{2}{G}{G}
Nature's Will
Enchantment
Whenever one or more creatures you control deal combat damage to a player, tap all lands that player controls and untap all lands you control.
{1}{G}
Summer Bloom
Sorcery
You may play up to three additional lands this turn.
{2}{W}
Terra Eternal
Enchantment
All lands have indestructible.
{3}{R}
War's Toll
Enchantment
Whenever an opponent taps a land for mana, tap all lands that player controls.
If a creature an opponent controls attacks, all creatures that opponent controls attack if able.