Oakcritters offers no advantage over Scoia'tael cards like Panther and Dryad Enchantress, yet for some reason it requires Devotion to get the most out of it. Let's compare the three cards:
Panther gives you 1 less power but +1 bleeding duration. You could argue Panther is a better card because Bleeding (3) is unlikely to to destroy a unit, while bleeding (4) might sometimes get rid of a unit with a nasty effect. It also gives you a choice to deal 2 damage instantly instead, which might be better on rare situations.
Dryad Enchantress has more synergy with other Scoia'tael cards (Hamadryad, Mahakam Defender) and also has the useful Dryad tag (empowers Dryad's Caress for example). It also gives you a choice between Vitality and Armor, making it overall a better card.
Oakcritters takes two unit spots on a row despite being a Treant, which is a disadvantage if you use a Treant Symbiosis deck (rows fill up real quick with these decks). The only advantage the Treant tag offers is that if you use Nature's Rebuke, and you kill an enemy with it, and you have no Treants on the board but you do have an Oakcritter on the board... It gets +2 power. That's a very unlikely scenario which only happened to me once in 30~50 games. The Dryad tag interacts with more cards (Dryad Grovekeeper, Freixenet, Dryad's Caress), which makes Oakencritters an overall worse 4 provision Scoia'tael card despite requiring Devotion to fully unlock it's mediocre power.
This is of course a small issue in the grand scheme of things. But still I suggest increasing Oakcritters' Bleeding duration to 4 turns, or releasing a future card that has a strong synergy with Treants.
Panther gives you 1 less power but +1 bleeding duration. You could argue Panther is a better card because Bleeding (3) is unlikely to to destroy a unit, while bleeding (4) might sometimes get rid of a unit with a nasty effect. It also gives you a choice to deal 2 damage instantly instead, which might be better on rare situations.
Dryad Enchantress has more synergy with other Scoia'tael cards (Hamadryad, Mahakam Defender) and also has the useful Dryad tag (empowers Dryad's Caress for example). It also gives you a choice between Vitality and Armor, making it overall a better card.
Oakcritters takes two unit spots on a row despite being a Treant, which is a disadvantage if you use a Treant Symbiosis deck (rows fill up real quick with these decks). The only advantage the Treant tag offers is that if you use Nature's Rebuke, and you kill an enemy with it, and you have no Treants on the board but you do have an Oakcritter on the board... It gets +2 power. That's a very unlikely scenario which only happened to me once in 30~50 games. The Dryad tag interacts with more cards (Dryad Grovekeeper, Freixenet, Dryad's Caress), which makes Oakencritters an overall worse 4 provision Scoia'tael card despite requiring Devotion to fully unlock it's mediocre power.
This is of course a small issue in the grand scheme of things. But still I suggest increasing Oakcritters' Bleeding duration to 4 turns, or releasing a future card that has a strong synergy with Treants.