Venture into the Undercity vs Venture into the Dungeon Venture into the dungeon and venture into the Undercity are very similar mechanics that basically work in the same way, just with a different destination
Tactics, in turn, is better going first, being either a consistency card or a way to make hand traps worse
[/spoiler] [spoiler=Cantillos, Xynchro Emperor] 2 Level 5 "Xynchro" Monsters OR 1 Tuner Xyz monster + 1 or more non-Xyz monsters Once per turn: You can detach one Xyz material from this card, add one "Xynchro" Tuner from your Deck or Graveyard to your hand
Umbral Horror Ghoul X DARK Level 4 [ Fiend / Effect ] ATK 1800 DEF 0 Once per turn: You can make this card's ATK 0, and if you do, Special Summon 1 "Umbral Horror" monster with 0 ATK from your hand
Take your deck out for a spin with and without this card to see if youre too slow to get any mileage out of it
This also marks in the introduction of glimmers from such Pixar films as Monsters, Inc