I find that, typically, when you are about to off an Oblivion Stone or a Nevinyrral's Disk effect, at least one other player wants it
In that sort of a role Remand is the vastly more desirable card, you want countermagic to deal with stuff cheaply and efficiently, you play card advantage spells to provide the late game inevitability and so you are just harming your own disruptive power by trying to combine the two into one overcost card
Persuasive Interrogators If I can investigate, make five Clues and then play this, all I need is 10 mana to win the game. I think these Persuasive Interrogators have given you Stockholm Syndrome
Every game competitive game needs a ladder to climb and MTG Arena divides its ranking system into two parts
While Thrummingbird is just a 1/1 for two mana, it proliferates every time it deals damage to a player