best spider cards mtg for themed forced combat deck? Top 10 Spiders in Magic:

Build your army of mindless androids alongside commanders Szarekh, The Silent King and Imotekh, The Stormlord

When used in conjunction with cards such as Deceiver Exarch or Kiki, Jiki, Mirror Breaker, Splinter Twin is able to easily go infinite, creating infinite numbers of tokens with haste

If you cast a creature spell this way, it gains haste until you lose control of that creature (or, in rare cases, you lose control of the creature spell while it's on the stack)

Valakut Stoneforge offers no utility in play, but using a land slot that would otherwise be a basic Mountain on a card that you can sometimes cast as a wheel is a huge upgrade