Alt+[type]235[while holding alt, then let go] = δ
No, I think cute-mew meant if you discarded a non-δ with an effect which mentions δ, therefore it has δ on its card. Technically it should count, but I'm sure that it'll be errata'd out, or never happen. Note that effects involving deltas are on deltas. (eg. Pellipper [sp?] MC, Kingdra HP)