Thrumming Stone [Coldsnap] Ox they're treated as though they

they're treated as though they don't exist

{T}: Counter target activated ability from an artifact source unless that ability's controller pays {W}

Set: Urza's Saga Type: Sorcery Rarity: Uncommon Cost: {2}{U} Each player discards their hand

if it's on the battlefield

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

Thrumming Stone [Coldsnap] Ox they're treated as though theySet: 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.)