There are other ways that green can double or even just proliferate counters, helping you more quickly tick up your team
Tifa has a Landfall trigger that doubles her power alongside her existing Trample keyword
Player: Mom, I want Krrik, Son of Yawgmoth! Players Mom: We have Krrik at home. Krrik at home: All joking aside, I wanted to focus on building an interesting take on Mono-Black Life Drain without the Storm components that have soured players on Krrik decks
Runed Stalactite is particularly handy since our Commander isnt herself a Snake but may want all the Snakish benefits
Finally, Red + Green Burn tends to punish what Green hates, namely all-things winged or artificial (Clan Defiance, Cindervines, Ruric Thar, the Unbowed, etc.), or staples Burn onto already-useful effects (Vengeful Rebirth, Exploding Borders, etc.)
The going rate for 4/4 hasty fliers is , so losing haste at the cost of but with an additional toughness is acceptable