Thrumming Stone [Coldsnap] Ox lands tapped for mana produce

lands tapped for mana produce mana of the chosen color instead of any other color

For each permanent destroyed this way

they're treated as though they don't exist

Landfall — Whenever a land enters the battlefield under your control

Set: Visions Type: Creature — Atog Rarity: Rare Cost: {1}{U} {0}: Chronatog gets +3/+3 until end of turn

Thrumming Stone [Coldsnap] Ox lands tapped for mana produceSet: Coldsnap Type: Legendary Artifact Rarity: Rare Cost: {5} Spells you cast have ripple 4. (Whenever you cast a spell, you may reveal the top four cards of your library. You may cast spells with the same name as that spell from among the revealed cards without paying their mana costs. Put the rest on the bottom of your library.)