9 Yata-Garasu The Dreaded Yata Lock Yata-Garasu may not be so scary now, but during the Duel Monsters era, it could hold you in what the players referred to as a Yata lock
On top of that, the sizing of Vampires isnt close enough to the things that theyre attacking into for such a small pump to end up being relevant
A Synchro summon is done by sending a Tuner monster and 1 or more non-tuner monsters from your field to the Graveyard, and special summoning a Synchro monster from your Extra Deck whose level exactly matches the combined levels of the material monsters
Without flash Hollowhenge Overlord would probably die right away, but sneaking it in on an opponent's end step makes it that much more likely you'll get at least one trigger from it
What cards are similar to Kederekt Leviathan
Many decks can use a cheap sac outlet, so the chances of this being upside instead of downside are pretty high