According to Corey Bowen, a senior game designer at Wizards whos created over 30 precons and also served as lead designer on Spider-Man, the answer is complicated and changes frequently
Orvar, the All-Form commands this deck full of great cards to copy and spells to target them, often multiple at once
Urza block was a disaster for a reason, and I haven't even touched on some other broken as hell cards like Yawgmoth's Bargain, Gaea's Cradle, or the various "free" spells either
Elaine Chase, Chief Marketing Officer for TCGs at Ravensburger describes it as: the perfect way for Disney-lovers to jump into and start collecting cards showing off their favourite characters and moments from Disney classics. Elsewhere, the Disney Lorcana World Championship takes place on June 28th and 29th
And this is just depressing as a topdeck
If none were, the ability won't trigger at all