You have a choice of what to do with your characters
Lightning, Army of One Legendary Creature Human Soldier First strike, trample, lifelink Stagger Whenever Lightning deals combat damage to a player, until your next turn, if a source would deal damage to that player or a permanent that player controls, it deals double that damage instead
You cant counter creatures, but you can kill them if they are on the smaller side of life
The Rat tokens Vren creates all get extra stats for every Rat, so with just a few removal effects, you'll have an army of Rat tokens that'll be hard to deal with
Additionally, if a creature with a counter on it under your control dies, it's returned to the battlefield during the next end step
Electrostatic Field Pteramander Kaza, Roil Chaser Tezzerets Gambit Octavia, Living Thesis Guttersnipe Deep Analysis Bloodthirsty Adversary Elemental Eruption Curse of the Swine Finale of Revelation Galvanic Iteration Volcanic Torrent Many players may want to keep pingers like Electrostatic Field and Guttersnipe, but to me the whole point of Spellslinger is that you can skip out on playing these sorts of intermediate permanents