Forum:The power of, "Gravekeeper's Watcher". Do tell.

Hello, this card has confused me a little. With in the ruleings it says you can't activate this card against cards like Magic Jammer etc "at a cost" So I was wondering, what cards can you use this card against? Is it cards which have effects just like Gravekeeper's Watcher if so, what cards are they? Basicly can anyone tell me what cards Gravekeeper's Watcher can activate its effect to. Thank you very much

(87.102.66.182 14:36, 24 July 2008 (UTC))