Toxic Deluge gives all creatures -X/-X until end of turn, but the X amount is determined by the amount of life you pay when you cast it
What Is the Mana Value of an Improvised Spell
If I wasnt in a class and you were looking for me, I can almost guarantee that youd find me tucked away in the school library, cards in hand and desperately fighting for survival
(Swords to Plowshares, by the way, was playing into this same flavor.) The danger of not permanently removing your threats is that they might come back to haunt you
However, if this spell's caster has already played it prior within a game, it immediately causes that player to win the game
Theres also Absolute Virtue, a beefy but expensive 8/8 Warrior that costs eight mana but gives you protection from each of your opponents