After slapping on a few Energy of any typing, you can easily use Genome Hacking to copy your opponents Active Pokemon to attack with any of their attacks of your choice
I still say the base deck is one of the better Precons Ive seen (especially if this semi-tribal creature flavor is your thing if you like Izzet Spellslinger decks, obviously you might feel different), but this just has a little more oomph to it
We finally have a mana creature accelerant that isnt vulnerable to Liliana, the Last Hope
menace (This creature cant be blocked except by two or more creatures.) Abomination of Llanowars power and toughness are each equal to the number of Elves you control plus the number of Elf cards in your graveyard
There are loads of red/blue cards in the racing set that encourage you to pitch cards into the yard for value, and Rielle plays very nicely with all of these
How it's marked: Turn the Pokmon card 180 degrees (upside down)