We had some contradictory rulings going on about split cards versus morph and when you look at what sets of characteristics. Adventures gave us the reason to shore up these rules. This isn't a change for morph, but it does change some answers for split cards: if you're allowed to cast a spell with a certain mana cost or color, look only at the half you're casting. Kari Zev's Expertise will allow you to cast Beck (but not Call).

But stop right there before you get too excited—you can't cascade into Beck / Call with Shardless Agent, since cascade finds a card with a certain converted mana cost and then says that you can cast the card you found. Beck / Call's converted mana cost is 8, and 8 > 3, so you're still out of luck with cascade.

When you cast this spell, exile cards from the top of your library until you exile a nonland card whose converted mana cost is less than this spell’s converted mana cost. You may cast that card without paying its mana cost. Then put all cards exiled this way that weren’t cast on the bottom of your library in a random order.

You may cast a card with converted mana cost 2 or less from your hand without paying its mana cost.

on continue de vérifier que le CCM est inférieur ou non