Back to Basics [Ultimate Masters] Oath of the Gatewatch the player can activate mana

the player can activate mana abilities only if they're from lands that player controls and only if mana they produce is spent to activate other mana abilities of lands the player controls and/or to play that card

Set: Stronghold Type: Enchantment Uncommon Cost: {1}{G} Creatures you control have trample

Set: Battlebond Type: Creature — Spirit Rare Cost: {3}{G}{G} Untap all permanents you control during each other player's untap step

Set: Junior APAC Series Type: Creature — Phoenix Rare Cost: {4}{R} Flying (This creature can't be blocked except by creatures with flying or reach

Back to Basics [Ultimate Masters] Oath of the Gatewatch the player can activate manaSet: Ultimate Masters Type: Enchantment Rare Cost: {2}{U} Nonbasic lands don't untap during their controllers' untap steps. "A ruler wears a crown while the rest of us wear hats, but which would you rather have when it's raining?" Barrin, *Principia*