Generally, Ultra Rare cards include special mechanics like Pokemon ex or Pokmon V
enchantments , representing lingering magical effects, which usually provide an ongoing effect to the game, and creatures , which can be used to attack opponents and block incoming attacks
Tidus lets you move counters around characters, and then when you do combat damage to a player you get to draw cards and proliferate
Facedown Monsters can not be used for any Extra Deck summons except Fusion (which not too many decks run in the modern game)
BT9-111 SEC Digimon Lv.7 Alphamon: Ouryuken Color Black Cost 15 DP 16000 Digivolve Cost 1 Black 7 from Lv.6 Form Mega Attribute Vaccine Type NO DATA/Royal Knight/X Antibody Card Text 1 [Special Digivolution Condition] [Digivolve] 3 from [Alphamon] w/ [Ouryumon] digivolution card [Effect] [When Digivolving] Delete all of your opponent's Digimon with the highest play cost
To me, Deadpool seems more fun (and less toxic) as a surprise card in the 99