Forcing the opponent to discard an instant or sorcery removes an important damage spell, giving -2/-2 to a creature is likely to kill the majority of the creatures they field, and draining two life essentially undoes a spell's worth of damage
Then it fights up to one target creature you don't control
(At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) Whenever you win a coin flip, Karplusan Minotaur deals 1 damage to any target
It takes a lot of practice and perseverance to be good at shuffling cards this way
For Blessing of Frost to work its magic, you want to be playing cheap creatures with power and sizeable three-drops, trying to close the game quickly, and only playing basic lands or Faceless Haven
Shadowheart, Dark Justiciar Shadowheart, Dark Justiciar is a cleric with powerful draw potential