Forum:Soul Exchange and Lich Lord/Diabolos

Just wondering if selecting Lich Lord, King of the Underworld or Diabolos, King of the Abyss as the target of Soul Exchange, and then attempting to tribute them? Is that considered a game mechanic, effect, or tribute summon.

Same for Volcanic Queen/Lava Golem. Are those considered card's effect or summoning conditions?

Thanks in advance. --Drew-Gi-Oh! (talk) 05:49, August 22, 2010 (UTC)