Creatures
Charnel Troll: 3 mana for a 4/4 is very nice plus with the ability to grow 1 every turn is very nice. plus the trample adds to life damage.
Doom Whisperer: Big flying boi. 6/6 Trample and Flying. the surveil will help but hes meant to be a threat in the sky.
Glowspore shaman: trades with a decent chunk of things being that its power is 3. it also helps cycle cards from your library for Charnel Troll or the "Undergrowth" ability in general.
Golgari Findbroker: 3/4 is decent blocker but this will help bring a creature back from the graveyard to your hand.
Llanowar Elves: Helps ramp mana.
Multani, Yavimaya's Avatar: Trample, Reach and He will always be a big boi by the time you play him with the lands on field AND the lands that youve been discarding with Glowspore and Stitcher. Also he has his own regeneration ability.
Pelt collector: easy 1 drop that usually gets bigger and the little bit of trample helps.
Plaguecrafter: For easy removal and another body in grave to exile. you could even use him as a destroy card or another smaller creature.
Ravenous Chupacabra: For easy removal. no sacrafice.
Stitchers supplier: 1 drop to help cycle through your library when he enters AND when he leaves. very helpful to go through your deck.
Sorcery/Spells
Cast Down: Instant removal for 2 mana. we're running aggro so this will help.
Vraska's Contempt: 4 mana instant removal towards creature OR Planeswalker. very nice to have against tefari or someone else.
Find/Finality I originally had more removal but i just put this card in to help with getting a creature(s) back from the graveyard.
Planeswalker(s)
Vivien Reid: Ability 1 +1 helps with cycling through the deck without removal of your cards to the graveyard. Ability 2 -3 Destroy an artifact, enchantment, or creature with flying is very helpful. Ability 3 the last ability gives you an emblem that makes anyone you have a pretty big boi, and your bigger bois, even bigger..