Alone in the hand, Harp doesnt give you too many options, besides going into battle, crashing and then making plays in main phase 2
A general rule that can be used to determine the rarity is based on the rarity symbol on the cards
It's unclear how prevalent this split is going to be throughout the set, but it could make for some interesting decks if there are multiple paths to getting the same cards out on the field
For example, while it's in your graveyard, Keeper of the Crown is a green creature card with mana value 3
Lower Text - Promo Info booster NEW EVOLUTION [BT-01] CLOSECLOSE BT1-029 R Digimon Lv.3 Parallel Rare Gabumon Color Blue Form Rookie Attribute Data Type Reptile DP 1000 Cost 3 Digivolve Cost 1 0 from Lv.2 Digivolve Cost 2 - Upper Text [On Play] Trigger Draw 1 (Draw 1 card from your deck)
After all, if players use all of their hand in a turn, they only get one card to play the next turn