all cards with toxic mtg Iguanar X until end of turn mtg cards with poison A

Four mana is definitely an investment, but hopefully youve been waiting to sacrifice your guys until this is ready

And again

I do worry that there might be a bit too much tracking for a new player here, with multiple cards having multiple different types of counters, and a lot of moving counters back and forth between permanents

It came out with Adventures in the Forgotten Realms Commander

Full Party - Whenever you attack with eight or more creatures, those creatures get +4/+4 until end of turn

This contributes to a stigma that keeping a borderline hand is the sign of a weak player and mulliganing a borderline hand is the sign of a strong player