Forum:Celestia, Lightsworn Angel vs. Magical Dimension

The situation:

1) Opponent has Dark Magician of Chaos, one set monster, and one set back row card (Magical Dimension. 2) I tribute Wulf, Lightsworn Beast to summon Celestia, Lightsworn Angel. 3)  I activate her effect and send the top 4 cards to the graveyard. 4) Opponent activates Magical Dimension, tributes DMoC for Magical Exemplar and uses's MD's effect to destroy Celestia. 5)  I choose to destroy Exemplar and set monster card for Celestia's effect. 6) He says I can't do that.

Problem: My opponent claims that I have to choose the cards to destroy when I activate Celestia's effect, but I thought that I have to choose it when her effect resolves. I thought her effect is of the type where I pay the cost to activate; then if my opponent chains, his card's effect resolves first; then I get to choose what to destroy. I'm basically asking when I have to choose the targets for Celestia's effect - when I activate the card or later when the effect is to be resolved? I hope I asked that correctly. Thanks!

Subcontinental86 04:01, 9 August 2008 (UTC)