Cards that protect themselves

I use the term "Fragile" for cards crucial to the deck but cannot really protect themselves.

Oppression cannot protect itself. It can stop DAD and JD, but most of the time it'll end up being blown away by something stupid and simple like Breaker, also its a loss of a card waiting to happen, as it just begs to be nuked by MST and Storm.

Drain, while stopping its own destruction from monsters, does a much better job of protecting itself, because of this, but also that sometimes, it isnt worth the Storm/MST.

Now, to protect these two cards from the aforementioned rampant backrow hate, people run: Dark Bribes and Solemn Judgement.

Eating away not only at your life, long term advantage, but also deckspace, the most important of the three.

Macro, on the other hand, does a wonderful job protecting itself by keeping big threats off the field, such as Vayu related crap and JD and DAD and Zombie Related Synchro Madness.

While it is also targeted, you run an effective SIX of these(Dimensional Fissure) per deck, at no life cost. Thus, it is significantly LESS fragile and desiring of protection.

The ideal cards in terms of fragilitiy are cards such as Book of Moon, quickplay spells that work quite well, and you can chain to random removal, making it hard to keep down, other than end-phase MST-ing it.