Write on playtest cards, and include Alpha
Those include: Sidequest: Raise a Chocobo is the most realistic incentive available, as the others are too rare
It shows up everywhere black decks are allowed because its efficient and flexible, and it hits almost anything that matters before your opponent can even cast it
Smee, Bumbling Mate Uncommon 185 Mufasa, Champion of the Pride Lands Rare 186 Nala, Fierce Friend Uncommon 187 Pyros, Lava Titan Rare 188 Razoul, Palace Guard Common 189 Robin Hood, Beloved Outlaw Common 190 Robin Hood, Champion of Sherwood Legendary 191 Sheriff of Nottingham, Corrupt Official Super Rare 192 Simba, Fighting Prince Super Rare 193 Simba, Rightful King Uncommon 194 Thaddeus E
Elsha gives you permanent card advantage by letting you cast noncreature spells off the top of your library with flash
This is partly, because it allows exiling the specific card that you know you can play immediately, most often a land