They're known for their Katana sleeves, as well as some licensed sleeves for recent Magic sets
(7/1/2012) If one of Spelltwine's targets is illegal when Spelltwine tries to resolve, you'll still exile and copy the remaining legal target
Sanctum of Tranquil Lights ability does count itself at least, so it starts out at 5 mana to tap any creature
A Cat, Elemental, or Dinosaur tribal deck is probably going to want to play all Cats, Elementals, or Dinosaurs anyway, so the opportunity cost of playing Kaheera as your companion in such a deck is low
Sylveon ex takes 20 additional damage from Metal-type attacks
If your dino deck is packed with dinos (which it probably ought to be if it's a dino deck), consider including Vaultborn Tyrant, a mega-resilient dino that'll surely be drawing you tons of cards