Rusko, Clockmaker [Mystery Booster 2] 73a indestructible If Blightsteel Colossus would

indestructible If Blightsteel Colossus would be put into a graveyard from anywhere

That monster's ATK is halved

You can only use this effect of "Trickstar Bloom" once per turn

and walk always in the light

destroy all Zombie-Type monsters Special Summoned by this effect

Rusko, Clockmaker [Mystery Booster 2] 73a indestructible If Blightsteel Colossus wouldSet: Mystery Booster 2 Type: Legendary Creature Human Artificer Rarity: Uncommon Cost: {2}{U}{B} When Rusko, Clockmaker enters, conjure a card named Midnight Clock onto the battlefield. Whenever you cast a noncreature spell, put an hour counter on each permanent you control named Midnight Clock. Each opponent loses 1 life and you gain 1 life.