Darksteel Reactor [Darksteel] noPrice or monster effect is activated:

or monster effect is activated: Tribute 1 "Hieratic" monster

If this card is Normal or Special Summoned: You can target 1 Machine monster with 2100 ATK or DEF in your GY

Set: Metal Raiders Card type: Normal Spell Rarity: Super Rare Attack: 0 Defense: 0 Destroy all Spell and Trap Cards on the field

Set: Shadows in Valhalla Card type: Effect Monster Rarity: Super Rare Attack: 1900 Defense: 1800 If this card is Normal Summoned or flipped face-up: You can Special Summon 1 Level 4 or lower “Ninja” monster from your hand in Attack Position or face-down Defense Position

look at target player's hand

Darksteel Reactor [Darksteel] noPrice or monster effect is activated:Set: Darksteel Type: Artifact Rarity: Rare Cost: {4} Indestructible (Effects that say "destroy" don't destroy this artifact.) At the beginning of your upkeep, you may put a charge counter on Darksteel Reactor. When Darksteel Reactor has twenty or more charge counters on it, you win the game.