There are six different inks: Amber , Amethyst , Emerald , Ruby , Sapphire , and Steel
Id recommend focusing on a mix of the best disguise creatures listed above if possible
Bloodtracker remains an astonishingly good source of card draw for +1/+1 counters decks, or Vampire decks that can get more counters onto him
The activation cost can be a bit much, so ability cost reducers like Agatha of the Vile Cauldron, Zirda, the Dawnwaker, and Heartstone can at least bring it down to
Approach needs to be cast twice for you to win, and it has seen play as a win condition in control decks with lots of filtering, card selection, and scry/surveil effects
Creature - Fungus Tendershoot Dryad Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.) At the beginning of each upkeep, create a 1/1 green Saproling creature token