Tribute this card and at least 1 other monster so the total original Levels Tributed equal or exceed the Level of that "Subterror" monster in the Graveyard, and if you do, Special Summon that monster in face-up or face-down Defense Position
Raichu (Shadowless) The electrifying energy of Raichu practically sparkles from this coveted card
There are lots of colorless options, ranging from some of the most powerful cards to old, overcosted rocks that you pay mana into and tap just to draw a card
Ritual Raven X DARK Level 1 [ Fiend / Effect ] ATK 300 DEF 300 If you Ritual Summon exactly 1 DARK Ritual Monster with a card effect that requires use of monsters, this card can be used as the entire requirement
Then the planeswalker card type peaked in War of the Spark (WAR), which featured 36 total walkers, each with the new static ability technology wed see on pretty much every planeswalker moving forward
I love when Commanders have little caveats of this sort, as they challenge us to look beyond the obvious staples for Reanimator for new synergies while allowing WotC to print Sefris with a very low mana value for what she provides
