yugioh gold sarcophagus deck supports Thunder Dragon Dark magician and Gold Sarcophagus

The Penguin part of this deck is to combine Penguin Soldier + Nopenguin

Thats second greatest, for those keeping track

Basically yes as long as you keep those fan-art rules in mind

Remember that a spell's mana value is determined only by its mana cost, so even if you cast Starfield Shepherd for its warp cost, its mana value remains 5

Trap Essence Counterspell with upside is always worth looking at, especially counterspells that cost 3 mana or less

Once per turn, you move it to an adjacent unoccupied Monster Zone (exactly like a built-in Senet Switch), but it will also move itself when a Monster is summoned to your opponent's field to zone closer to that Monster