With an avergae CMC of 4, you ned much more ramp to support the deck. you Also have next to no card advantage. Adding more draw effects and early game ramp will help a lot.
January 12, 2019 9:37 a.m.
Ramp for sure - without green, this comes from Land Tax and cantrips ( Brainstorm , Ponder , Opt ). If you really want to be rude like you say, you're also going to need to add a lot more cheap control. I'm talking prison effects, counterspells, bounce spells (bounce things back to a player's hand you targeted with triplets the same turn, and you can steal it for yourself!), and lifegain. You have this right now, but in creatures/spells so high in CMC they'll be disrupted by opponents because they can be easily predicted, or have minimal impact on the game. I recommend more mana rocks for this, and cheaper enchantments/spells; maybe some combos if you like them, so you're not realiant only on taking opponent's stuff (late game, most people's hand are empty). Triplets is one of my personal favorite semi-competitive decks irl, they're really multi-purpose and soooo fun in multiplayer. Hope you have fun!