An Elemental Hero Prisma/ Skill Drain rulling you might not know.

1. Skill drain does not stop ignition activation? (right ?)
2. Prisma sending material is a cost


tldr;
prisma effect name change negated under skill drain, but sending monster to grave is can do under skill drain


Discuss

1. Skill Drain doesn't prevent activation, only negates the effect of faceup monsters. So you can still pay the cost for Prisma.
2. Yes, it's a cost.

Correct, but every opp I fought, doesn't knew those
Yes.. I telling my opp thinks it works like Card Trooper under skill drain effect
It negates the effect, but still mill.

So,... For the future reference, I'll send anyone who asking why prisma can send material to grave, to this thread

BTW, I have a question refers to Prisma's effect. If I successfully change Prisma's name due to his own effect, and later that turn Skill Drain is activated, then Prisma can keep the changed name, right?

Yes.