If I have a big blocker..let's say..Uranus..I don't just block a first turn card with her..because I know most of my opponents expect me to use her as a defensive card..so I put out other of my cards instead with a few pillz to beat their card very unexpectedly..because most of the time..people are expected to put only one or a few pillz on their cards when they see a big blocker because it's pill wasting if for example: I put 4-5pillz on Zatman and my opponent just blocks him with Uranus (it's a complete waste of pillz!!) so more likely, an opponent would only put 1 or a few pillz in his/her card if he/she sees a blocker so you are open to attack him/her easily..as I said..it happens most of the time..so it doesn't happen always..
Blockers..are actually good attackers and bluff finishers..unless your opponent is confident because he has a SOA or SOB that can get through a blocker..but aside from that..blockers are good attackers..they reduce damage..so more likely, your opponent won't go to lengths to waste his best cards or pillz just to beat a card that reduces damage unless he sees through it and feels that you are already trying to finish him off or his life points are threatened that can make the big game difference of losing a match..
Uranus is purely for defensive purposes, and as a surprise attacker. Tanaereva is useful in any situation, but is best at attacking, with 10/7 stats. -2 min 2 Damage reduction isn't nearly as good as -5 min 1, so Uranus is purely just to pretty much stop 1 of the opponent's cards from doing any damage..
I really enjoy using a card with 7 damage and Nistarok to get the Ko.... people rarly expect the attack, and Nistarok's 8 power and Sob realy help him win the fight... the same is true of many of the blockers, but Nistarok is my personal favorite.
Erpeto with 7 pillz and his courage is hard to beat + Nistarok with 5 pillz =
Unless of course they have a blocker of thir own.
If I'm sure I can deal with losing health for 1-3 turns, and I'm confident I can finish off the opponent in one move, I'll do it. I usually play a 2 star card with +attack like Miken Moose first, if I have to attack first, then bring out a heavy damager, like Lou in the 2nd or 3rd round, and use fury and the rest of my pills for attack.