mtg survival cards of the Fittest White deck of 100 Magic cards (2 Traditional Foil Legendary cards Veteran Survivor | Duskmourn: House

When you are exiling tons and using your mana each turn for exiling card draw, then you will likely be just drawing your stuff, enter this uncommon land that'll keep you from discarding

Some eldritch being that embodies some greater concept

Paying four mana to do nothing else that turn is a pretty big cost in tempo

It takes a lot of mana to make the removal side work, but if you manage to get delirium, it doesnt really matter as it doubles the damage of your burn spells, as well as pingers like Thermo-Alchemist

This alone is a fairly decent answer to cards with toughness of two or less, while also getting around the targeted aspect so that it can damage warded creatures