Unit source constants.
SCROLL_UNKNOWN
Unknown Scroll (elemental 1-3*).
SCROLL_MYSTICAL
Mystical Scroll (elemental 3-5*).
SCROLL_LIGHT_AND_DARK
Light and Darkness Scroll (LD 3-5*).
SCROLL_WATER
Water scroll (water 3-5*)
SCROLL_FIRE
Fire scroll (fire 3-5*)
SCROLL_WIND
Wind scroll (wind 3-5*)
SCROLL_LEGENDARY
Legendary Scroll (elemental 4-5*)
SUMMON_EXCLUSIVE
Summon Stones (elemental 3-5*)
SUMMON_LEGENDARY_PIECES
Legendary Summoning Pieces (4-5*)
SUMMON_LIGHT_AND_DARK_PIECES
SCROLL_TRANSCENDANCE
Transcendance Scroll (elemental 5*)
SCROLL_LEGENDARY_WATER
Legendary Water Scroll (water 4-5*)
SCROLL_LEGENDARY_FIRE
Legendary Fire Scroll (fire 4-5*)
SCROLL_LEGENDARY_WIND
Legendary Wind Scroll (wind 4-5*)