The more spells you play, the larger the storm will be, and overexpanding into an instant speed boardwipe is horrible
The very next set, Antiquities , included the card Interestingly, the flavor text, written by the designers back when they also handled worldbuilding duties, calls it "Urza's first attempt at mechanical life," implying that it functions on its own
Graded Population Report: Rainbow Energy #17 Visualize the distrbution of grades in the chart
Ulvenwald Observer 4GG Creature Treefolk 6/6 Whenever a creature you control with toughness 4 or greater dies, draw a card
If the spell resolves but the permanent with squad leaves the battlefield before its squad ability resolves, you'll still create the token copies