Not quite a Young Pyromancer, but the extra flexibility of triggering others more or getting a 2 powered token can make the two worth it in spellslinger decks that aim bigger, either through cost reduction or a control strategy
If the land you played or spell you cast shares a mana value with multiple digits in the chosen number, cross only one of those digits out each time Duelists' Convocation International's last ability resolves
Nailing this ability to a reasonably costed 4/4 flyer was pretty busted when it debuted, and it still retains a high power level even today
To have three full Beta set collections
Image Source: Final Fantasy Wiki The second theory is that there's a Doom mechanic in the set somewhere
To make double-faced cards, they had to have their own sheet, so we ended up making a slot in each booster have one