Planar Nexus: Pretty absurd, given its ability to turn on Tron alongside just one of the Tron lands like Urza's Mine
Scrawling Crawler shines within this space as Underworld Dreams and Howling Mine compressed into a single card
A Mind Twist cast at the right time can essentially end a game, creating a card disadvantage which is impossible to recover from
So, if thats the only card in your hand, you go to ninjutsu it in, and your opponent can make you discardthen you wont have the creature anymore to make the swap, so it wont happen
(If this card is your chosen companion, you may put it into your hand from outside the game for as a sorcery.) Vigilance Each other creature you control that's a Cat, Elemental, Nightmare, Dinosaur, or Beast gets +1/+1 and has vigilance
Gift of the Woods is still magical, though