Good equipment also helps aggro decks go the distance, since even when one threat dies, the next weenie can pick up its pile of swords and keep the pressure on
It's only at the beginning of your combat
Some examples: Swords to Plowshares, Teferis Protection, Chaos Warp, Great Train Heist (or other Spree cards, you pay extra costs but can go wild), Akromas Will, Deflecting Swat, Wear/Tear, and my personal favorite, Reprieve
Neera, Wild Mage decks are full of cheap cantrips like Ponder because, unlike proper cascade cards, Neera can free-cast anything from the top of the deck regardless of mana value
Their spells tend to focus on healing or preventing damage, protecting their allies, and neutralizing an opponent's advantages on the battlefield