Commander Legends is a weird peanut butter and jelly set, where peanut butter (Draft) and jelly (Commander, dont ask) combine their forces for a Magic experience like no other
Efficiency can be determined simply by the reward you receive at certain mana costs (Counterspell and Cancel do the same thing, but Counterspell costs less), the total payoff you receive from a single card (Hull Breach and Decimate are both good cards, but Decimate usually covers much more ground), or the payoff you receive in conjunction with other cards (Anointed Procession makes other token production cards completely absurd if unchecked, which is usually better than adding one more card that simply makes tokens like Spectral Procession in a token strategy)
Dual Ink types confirmed Apart from the inclusion of new properties, the biggest new mechanic confirmed to be included in Archazias Island are dual Ink type cards
One premium foil token from Theros Beyond Death
The line I'll draw is that the card has two distinct names, and they often, but not always, have two distinct arts
Hearts Ace of Hearts Two of Hearts Three of Hearts Four of Hearts Five of Hearts Six of Hearts Seven of Hearts Eight of Hearts Nine of Hearts Ten of Hearts Jack of Hearts Queen of Hearts King of Hearts Diamonds Ace of Diamonds Two of Diamonds Three of Diamonds Four of Diamonds Five of Diamonds Six of Diamonds Seven of Diamonds Eight of Diamonds Nine of Diamonds Ten of Diamonds Jack of Diamonds Queen of Diamonds King of Diamonds Spades Ace of Spades Two of Spades Three of Spades Four of Spades Five of Spades Six of Spades Seven of Spades Eight of Spades Nine of Spades Ten of Spades Jack of Spades Queen of Spades King of Spades Clubs Ace of Clubs Two of Clubs Three of Clubs Four of Clubs Five of Clubs Six of Clubs Seven of Clubs Eight of Clubs Nine of Clubs Ten of Clubs Jack of Clubs Queen of Clubs King of Clubs How many cards are in a deck