mtg how to read a card the Runes - Jumpstart #167 (English) the MTG wiki is such

Gruul Prowess relied on about a dozen spells to trigger valiant and prowess abilities, while Mono-Red Aggro leaned on a sizable lineup of creatures to deliver relentless damage

If you draw a low-cost sliver and have a lot of mana spare, plugging it all into this effect can give you a load of bodies, ready to receive whatever buff your other slivers can provide them

For example, if youre building a deck around Urza, Lord High Artificer, you probably want a ton of cheap artifact creatures you can tap for mana, and then big heavy hitters you can cast with his second ability and all of that mana you generate

First, you'll get two potentially huge free spells from the cascade triggers