Compared to a statistic presented by Hasbro (preserved on Imgur), Wizards of the Coast produced 117 million booster packs in 2016
Well, cards that have abilities that activate when they come into play
Also, with the ability, it gives its sudo Lifelink, as any damage you deal to your opponents, you will gain it
Where I praised coven for how well it could play with cards from any Magic set or archetype, day/night is a great example of a mechanic which will set a deck or draft format apart from others in Magic
198 $0.19 Let the Storm Rage On 199 $0.11 Pick a Fight 200 $3.34 Strength of a Raging Fire 201 $0.06 Last Cannon 202 $0.09 Mouse Armor 203 $0.17 Weight Set 204 $267 Cinderella 205 $148 Snow White 206 $50.35 Arthur 207 $45.58 Madam Mim 208 $36.43 Pete 209 $77.78 Beast 210 $50.53 Lady Tremaine 211 $60.91 Shere Khan 212 $157 Alice 213 $50.25 Sisu 214 $72.08 Hercules 215 $39.25 Namaari 216
That exchange could be pretty advantageous