More answers for your questions, posted on Geekdo for Heroes of Graxia and Guardians of Graxia board games!
Heroes of Graxia Q&A
Q1: According to the rules, "Each player may only play as many Spell cards as the number of Units in his Legion." At what point does one determine how many spells a player may cast?
A: A player can only cast as many spells as they have units in their Legion. Once a unit is eliminated you can no longer associate a spell with them. You can however play a spell on a mercenary.
Q2: Can Nightfall Cloak card be stacked?
A: No
Q3: When playing Mercenary cards during combat, do they count toward Alesana's special +1 Attack for every Army and Mercenary cards?
A: With Alesana, yes, it works for Mercenaries played from your hand (it'd have to since you can't put Mercs in your Legion area)
Guardians of Graxia Q&A
Q1: How many cards can be played on a given turn?
A: Unless the rules for a scenario state otherwise, there isn't a specific limit beyond the limit of ones hand count, mana costs, etc.
Q2: Is the Guardian's ability to summon "behind" them only directly behind them or on any row behind them?
A: The Guardian can summon units on any adjacent tile to themselves or on your home row. You must pay the entire cost of the unit. You also may Summon a unit for a cost of 7 less mana, once per your phasing round, directly behind the tile(s) of the Guardian. This is called Guardian Summoning. Terrain restrictions apply. For example you can not summon an Elf unit on a Mountain tile.
Q3: Will a non-player unit with a ranged attack who is adjacent to a player unit prioritize melee attacking or ranged damage?
A: Non-Player ranged units will use their range ability unless there is an enemy unit adjacent to them. If there is an enemy unit adjacent to their tile they will attack with melee.
