Maybe you played a ton of mana ramp spells, generated a bunch of tokens that cant punch through whatever else is on the board, or are simply following up on someone elses board wipe
Can Ward Save My Creature From a Board Wipe
11 Peter Pan, Pirate's Bane (Alternate Art) - $124.78 Of Course Peter Is Worth More Than Hook Peter and Captain Hook are notorious for fighting each other on sight
Sidisi, Undead Vizier Perhaps unsurprisingly, Sidisi, Undead Vizier lends itself well to combo shells that rely on Sidisi exploiting creatures to find cards like Ad Nauseam or Doomsday
I am not saying this is bad, as it stops the game from becoming stagnant, but it also leads to the ban hammer coming down when cards go too far
Jacked Rabbit Jacked Rabbit is one of the best cards to be putting +1/+1 counters on