beldum pokemon card SV30/SV94 Shiny Rare Sun & Moon Hidden Fates Near Silver Tempest Singles Beldum 116/185 - SWSH04 Vivid

I couldnt separate Fecundity and Spread the Sickness

They're treated the exact same as any other card in that they sit in your deck waiting to be drawn, have a limit on how many a deck can have and have a mana cost needed to cast them

But, nope, you can't create infinite copies that easily: even though the Delina token is attacking, it was never declared as an attacking creature, and therefore the token won't trigger its abilities

Its a cool mix of abilities that means you can go all-in on one of the most powerful tribes in MTG, while also focussing on benefitting from your discards and draw a lot of extra cards too