Hey, Faeria is pretty awesome. I have several tweaks that would make cards more interesting, both in-game and for deckbuilding. These are not balance changes per say, in fact I’m avoiding commenting on cards that seem very strong.
Safeguard: Change to: “Give a creature or yourself Protection.”
Comments: This would allow a global defense option against yellow rush, or maybe red orb-killing decks.
Tax Collector: Obviously should steal 1 Faeria instead of gaining 1, in combat. Possibly increase cost by 1.
Daring Adventurer: Now gets +2/+2 for adjacent Faeria wells, as well as enemy creatures…
Comments: Now is a potentially serious creature for fighting over Faeria wells.
Syland Warrior: Takes 2 less damage from ranged attacks. Comments: Only from attacks that occur from range, due to blocking with his big shield. Creates an anti-range option for all decks. Which not crucial yet, with new cards, eventually may be desired.
Steamforce Enforcer: -1 Attack, is now immune from Taunt.
Comments: Taunt is a central ability in the game, it’s about time to have a creature that counteracts it. Alternatively, could keep the attack and get +1 cost.
Walking Fortress: Something cool. Anti-flight?
Wild Growth: Now creates new forests, not ever on plains.
Comments: Makes it a little more grow-y. Could be decent one day with more cards that interact with forests/create forests.
Gaea's Grace: Choose one: target creature on a forest gets +3 life. Or: You gain 2 life, return Gaea's Grace to your hand. Comment: Becomes potentially good healing to counter rush.
Gabrian Noble: Add: “Aquatic creatures have +1 Attack.”
Comments: Creates a bit of Aquatic synergy in the game, the fish summoned would thus be a 2/1, and any other aquatics get a slight boost. Plenty reasonable given the cost and three land requirement.
Architect: Change ability to: Production: Adjacent structures you control get +1 life. Comments: Positioning now matters, keeping Architect alive now matters, and allows you to create decks with the game's many structures that deal damage to themselves. Possibly make a 1/3 instead also?
Golden Aviary: I know that yellow is all about attack, but I’d rather see this give +1/+1 to your flying creatures. Perhaps an minor additional effect as well?