Phyrexian dreadnought and goblin welder

[elmarfud]

I've been playing Full English Breakfast for about a year now and this is the most awkward situation I have been in yet. This is what my board looks like:

- 1 goblin welder
- 1 sharpshooter
- 1 volrath's shapeshifter
- 1 mox saphire

In my graveyard I have a bunch of cards. Among those cards is a phyrexian dreadnought. The top card of my library is also a phyrexian dreadnought, making my shapeshifter a dreadnought as well.
My opponent has an inkwell levithan in play, so I need to have 2 dreadnoughts in play. I have 1 more dreadnought in my hand.

My question for you: Can I play the dreadnought from my hand and in response use my goblin welder to switch my mox saphire with the dreadnought in my graveyard (not the top one!).

Here's what I think:
When my hand-played dreadnought comes into play the 'sacrifice'-ability will trigger. In response to this trigger I tap my welder to get another dreadnought into play. His sacrifice-ability will also go to the stack. I sacrifice one of my dreadnoughts and so at least one of them lives ...

Greetings

Elmar Fud

[RJ]

I've been playing Full English Breakfast for about a year now and this is the most awkward situation I have been in yet. This is what my board looks like:

- 1 goblin welder
- 1 sharpshooter
- 1 volrath's shapeshifter
- 1 mox saphire

In my graveyard I have a bunch of cards. Among those cards is a phyrexian dreadnought. The top card of my library is also a phyrexian dreadnought, making my shapeshifter a dreadnought as well.
My opponent has an inkwell levithan in play, so I need to have 2 dreadnoughts in play. I have 1 more dreadnought in my hand.

My question for you: Can I play the dreadnought from my hand and in response use my goblin welder to switch my mox saphire with the dreadnought in my graveyard (not the top one!).

Here's what I think:
When my hand-played dreadnought comes into play the 'sacrifice'-ability will trigger. In response to this trigger I tap my welder to get another dreadnought into play. His sacrifice-ability will also go to the stack. I sacrifice one of my dreadnoughts and so at least one of them lives ...

Greetings

Elmar Fud

What you want to do works, but the dreadnought has to be the top card of the graveyard for the shapeshifter to be a dreadnought.  Either way if you play one, weld one, and sacrifice one to pay the cost you will have 1 dreadnought and 1 shapeshifter dreadnought.

[elmarfud]

Nice!  One more trick to add to my FEB-list.
Another thing we were discussing was what happens with the card that goes to the graveyard when you use welder. Does it go on top of your graveyard pile or does it take the place of the card you weld in? I'm asking this because it could make a great difference with volrath's shapeshifter.

greetings

Elmar fud

[LordHomerCat]

Welder's Oracle text instructs you to sacrifice the artifact in question.  Therefore, the newly welded-out target will be on the top of the graveyard.