Returns information about the spell displayed in the tooltip
Signature:
spellName, spellRank, spellID = GameTooltip:GetSpell()
Returns:
spellName- Name of the spell, or nil if the information in the tooltip is not for a spell. (string)spellRank- Secondary text associated with the spell name (often a rank, e.g."Rank 8") (string)spellID- Numeric identifier for the spell and rank (number, spellID)