You have to get rid of a second card to pay the cost, but the tempo gain and protection offered in that exchange are much greater than the loss suffered by pitching some other blue or green card
I agree that CCGs have a fundamentally different model, but in the standard CCG model, yes, there are ultra-rare cards, but most anyone who is a serious player will be buying enough copies to end up with one or more of them, and no one card should be significantly better than the others
Because Trap is a little narrow, you might not want to put more than 2 copies in your board
Hands down the best sac outlet in the game, Viscera SeerViscera Seer would be excellent if it was just a one-mana creature that said "sacrifice a creature" on it, as evidenced by Carrion FeederCarrion Feeder
Three main ways: going wide with tokens and an overrun or Coat of Arms, draining the table with Gray Merchant of Asphodel and aristocrats triggers, or grinding opponents out of resources through endless recursion until they cant keep up
Since theyre creatures, summons can attack, block, and suffer from summoning sickness
