A 4-mana deal 4 sorcery isnt premium removal, and I dont think adding a Young Hero Role token to the mix gets this there
This has two options, and it's here for Khans, which makes four Green mana each of your turns and pays for itself in a turn cycle
Im also a big fan of Nashi, Moon Sages Scion, though that card leans harder on combat mattering, some variance, and you having some life to play with
Moraug, Fury of Akoum Lets bring the fury with Moraug, Fury of Akoum
Theres Dovins Acuity (aka Information Campaign), a weaker twist on Disinformation Campaign that nevertheless can have an entire deck built around it
You may make a different choice for each non-Human creature you controlthat is, you may have none, some, or all of those creatures assign combat damage as though they weren't blocked