The Warp cost means you can deploy it when you want to have a big turn, enabling your impatience to get to higher mana totals, you big goopy brained goblin gamer, you
If WotC had needed to do this for Lord of the Rings, Fallout or Warhammer 40k, it would've been a doddle, but that typeline 'Spider Human Hero' appears in the Spider-Man set on dozens of different legendary creatures, so making this fit was going to be tough
Being able to get the extra card the turn you cast Ruin Raider is crucial, as a 3/2 is very fragile
The fact that split cards change whether its in your hand, graveyard, or on the stack is important because of how rules consider each spell
However, the catch is you will need to run both Water and Electric Energy
Whether it's a response to a board wipe or targeted removal, this little Instant will keep you in the game