yugioh lion heart deck NCF1-JP054 - - Japanese - Number 54: - Ultra number 54 Number 54: Lion Heart [1st

It lacks cards that can erase the board to start from square one (very much needed in group-hug decks), and there are only two top-tier, target removal cards Generous Gift and Swords to Plowshares

Even if you crew the creature that won't change it's power and toughness

The Rose Duelist also requires all 16 cards to conjure enough power to return to their appropriate time period, forcing the player to choose a side

Like Unmask or Fury of the Horde, which get into combo territory, and getting things done quickly before you'd have to rely on having enough mana for it

Since dashing is still casting the spell just for a different cost, you still add the appropriate commander tax onto the cost that you pay when you dash based on how many times you already cast the commander