Frozen enemies
Once an enemy is frozen they cannot be immediately damaged. Any physical attack will break the freeze without dealing any damage, but will leave the enemy stunned and vulnerable to the rest of any combo attack.
Power combos
Execute two or three quick attacks followed by a slow attack to execute a combo. To add more power to the combo you can hold down the slow attack button while you deal the first few quick attacks, effectively charging the final slow attack for massive damage.
Replenish magic
Crystals scattered in the various battle arenas protrude from the ground, and standing next to them will replenish your character's magic. The crystals vary in color, correlating to the four elements--they'll replenish anyone's magic, but characters with a matching element will replenish faster. Here's a tip: stand next to a magic replenishing crystal and you can continue to use your magic--either for attacks or defensive strategies--while your magic builds back up. Your magic won't run out until the power in the crystal is exhausted.
Elephant Pool arena...