Theres also a lot of X-spells available, from fireballs to mass draw spells, so lets do some basic subtraction and look at the X best X-spells in Magic
Whenever you have that big spell that essentially dictates if you win or lose the game, a Counterspell is devastating
I wish I had a Predator Ooze in my starting collection (and you can, with the Foundations Starter Collection!)
A single Swords to Plowshares in the sideboard will do
itll hit a good amount of our things, yes, but thats okay because itll cost them to keep us off those creatures, and Dawn will return any little guys who died early back when our opponents were willing to pay the life
There are also draws that involve Dreadhorde Invasion, Benthic Biomancer, Soul Diviner, and planeswalkers that make it nearly impossible to run out of gas