6 Terminate Of the few Pauper multi-colored removal spells, Terminate is the best of the lot
The term "ramp" in Magic: The Gathering refers to any spell card that generates a net positive amount of mana, whether that be through floating mana that expires at the end of the phase, lands placed onto your side of the field (though some count searching up lands to put into your hand as ramp as well), or artifacts and cards that create artifacts that can tap for mana
Duress is another card that can serve as a good substitute for currently played pricy cards
It can very much turn the tide in your favour when you need it most
Abomination, Terrifying Titan Clash for the Cosmic Cube The Clash for the Cosmic Cube starts at Avengers Tower and is one Epic Fight
You get access to blue as well, allowing you to play counterspells to make sure you can protect your battlefield and stop your opponent from playing their powerful cards