User:Yugioh pro player

magical dimension and lighty-magical dimension effect is "when you have one face up spellcaster monster on the field.(tribute it and special summon a spellcaster monster from your hand),destroy one monster on the field.look carefully at the bracketed pharse and it is in a sentence which also means it equals to one action and lighty does not miss the timing when it is tributed and the summoning occurs first then triggers lighty effect,but if you choose to trigger lightys effect you will miss timing to destroyed a monster through magical dimension effect