The types of cards present in Base Set are H (holo rare), R (rare), U (uncommon), C (common), E (Basic Energy) and O (other, here denoting Machamp which was not obtainable from booster packs)
As a rule of thumb, it is best practice to take a card out of a sleeve and examine it for yourself
Since Sefris gives us the rare opportunity to reanimate things at instant speed (any time we can get the last venture trigger in), we can even use these hatebombs reactively to blow out our opponents like reanimating Sunblast Angel in response to an attack, or Avacyn, Angel of Hope in response to Wrath of God
It wont hit particularly hard, but its metalcraft ability is an interesting one
In short, the look and feel of the cards from Pokmon card condition to finish often differ, with Japanese cards prized for their print quality and aesthetics