Becuase Scrap-Iron Thread

[-Lightray Daedalus-]

[color=#daa520][b]Scrap-Iron Magnet Trio[/b][/color]
[color=#daa520][b]EARTH/Level 1/Rock-Effect[/b][/color]
[color=#daa520][b]ATK:100/DEF:100[/b][/color]
[color=#daa520]When this card is Special Summoned: Special Summon up to 2 "Scrap-Iron Magnet Trio" from your Deck or Graveyard in face-up Attack Position. Destroy all "Scrap-Iron Magnet Trio" during the End Phase.[/color]

[color=#daa520][b]Scrap-Iron Driller Goblin[/b][/color]
[color=#daa520][b]EARTH/Level 1/Fiend-Effect[/b][/color]
[color=#daa520][b]ATK:100/DEF:100[/b][/color]
[color=#daa520][b]FLIP:[/b] You can only activate this effect if you've activated the effect of a "Scrap-Iron" card this turn; draw 1 card.[/color]

[color=#000000][b]Scrap-Iron Mekaengineer[/b][/color]
[color=#000000][b]EARTH/Rank 1/Spellcaster-Effect[/b][/color]
[color=#000000][b]ATK:0/DEF:1000[/b][/color]
[color=#000000]3 Level 1 monsters[/color]
[color=#000000]You can detach 1 of this card's material monsters to target 1 face-up monster you control and 1 face-up card your opponent controls; You can flip your targeted face-up monster to face-down Defense Position. Destroy your opponent's targeted card.[/color]

[color=#800080][b]Scrap-Iron Gateway[/b][/color]
[color=#800080][b]Normal Trap Card[/b][/color]
[color=#800080]Activate only during your turn. Target 1 "Scrap-Iron" monster in your Graveyard. Special Summon that monster in face-up Attack position and have its ATK become 0, then set this card face-down again instead of sending it to the Graveyard. A monster Special Summoned by this card's effect is destroyed during the End Phase.[/color]

[color=#800080][b]Scrap-Iron Barrier[/b][/color]
[color=#800080][b]Counter Trap Card[/b][/color]
[color=#800080]Negate the Activation and effect of 1 of your opponent's card effects that would destroy a face-down card you control, then set this card face-down again instead of sending it to the Graveyard.[/color]

[color=#800080][b]Scrap-Iron Cannon[/b][/color]
[color=#800080][b]Normal Trap Card[/b][/color]
[color=#800080]Inflict 300 Damage to your opponent for each Set card on the field, then set this card face-down again instead of sending it to the Graveyard.[/color]

[Premier Alexander Romanov]

How many Xyz Materials for Mekengineer?

[-Lightray Daedalus-]

[quote name='Reina Soho' timestamp='1319140315' post='5589867']
How many Xyz Materials for Mekengineer?
[/quote]

The Usual for Rank 1s
aka 3