Thundermare [Portal] Prophecy Colossus of Sardia doesn't untap

Colossus of Sardia doesn't untap during your untap step

Set: OTS Tournament Pack 3 Card type: Effect Monster Rarity: Ultimate Rare Attack: 1000 Defense: 500 You can Special Summon this card (from your hand) by discarding 1 other WATER monster

this card cannot be destroyed by battle or card effects

Set: Dark Revelation Volume 4 Card type: Effect Monster Rarity: Secret Rare Attack: 1800 Defense: 1900 Activate this effect only during your Battle Step

Thundermare [Portal] Prophecy Colossus of Sardia doesn't untapSet: Portal Type: Creature Elemental Horse Rarity: Rare Cost: {5}{R} Haste (This creature can attack and {T} as soon as it comes under your control.) When Thundermare enters the battlefield, tap all other creatures.