I will add the tag for you, still, the description and screenshot leaves much to be desired. If you are intending on updating further this tech-tree, some minor notes I take on my test:
1. Gold Finger position should be (0,2), not (1,1)
2. Hero abilities lack the level tooltip for most part
3. Infused Gargoyle takes (0,1) after learned if Seal is not learned before (Air Hero)