Some of these work best on small creatures, like deathtouch and reach, while others are better off being applied to a larger creature, like Kathril itself, like double strike and lifelink
Each player secretly chooses a number (write it down on a piece of paper or something)
It's rarely a dead card because it can also target your own creatures, which means it can be used in a pinch to buy back a creature with a powerful enters-the-battlefield ability such as Druid of Purification or Uro, Titan of Nature's Wrath while untapping 2 of your lands
But if you dont want to sacrifice your very important creatures there are also spells like Army of the Damned, Dread Summons, and Waste Management which generate creature tokens to give you some casualty fodder
It wont go quite as nuclear, but it does keep your vehicle running without being so reliant on gas
If one of the three dies, you then have two 6/6 creatures with trample