More Than Relentless I know it's important to squeeze every bit of value out of our limited card slots, but it would be a pretty uninspiring Rat deck if we didn't include at least a couple other Rat payoffs
Hungry Like the Werewolf I've explained that from the first pitch of the idea of a world based on fantasy horror tropes to the execution, a lot of time went by (close to ten years, I believe)

Advanced Search Sets Random Syntax Abolisher of Bloodlines Acolyte of Aclazotz Adanto Vanguard Alley Assailant Alluring Suitor Amalia Benavides Aguirre Anhelo, the Painter Anje Falkenrath Anje's Ravager Anje, Maid of Dishonor Anointed Deacon Anowon, the Ruin Sage Anowon, the Ruin Thief Arnyn, Deathbloom Botanist Arrogant Bloodlord Arrogant Outlaw Arrogant Vampire Arvad the Cursed Ascendant Evincar Astarion, the Decadent Asylum Visitor Balustrade Spy Baron Bertram Graywater Baron Sengir Barony Vampire Bartolom del Presidio Basilica Stalker Bat Whisperer Belligerent Guest Bishop of Binding Bishop of Rebirth Bishop of the Bloodstained Bishop's Soldier Bleak Coven Vampires Blood Artist Blood Bairn Blood Baron of Vizkopa Blood Burglar Blood Glutton Blood Host Blood Hustler Blood Hypnotist Blood Operative Blood Petal Celebrant Blood Researcher Blood Seeker Blood Tyrant Blood-Cursed Knight Bloodbat Summoner Bloodbond Vampire Bloodborn Scoundrels Bloodcrazed Neonate Bloodcrazed Paladin Bloodcrazed Socialite Bloodflow Connoisseur Bloodghast Bloodhall Priest Bloodhusk Ritualist Bloodletter of Aclazotz Bloodline Keeper Bloodline Necromancer Bloodlord of Vaasgoth Bloodmad Vampire Bloodmist Infiltrator Bloodrage Vampire Bloodrite Invoker Bloodsoaked Reveler Bloodsworn Knight Bloodsworn Squire Bloodsworn Steward Bloodthirsty Adversary Bloodthirsty Aerialist

It's pretty hard to get around a planeswalker with built-in exile
Best Blue Creature Payoffs and Synergies Blues creatures often have strong ties to noncreature spells, typically either artifacts or instants and sorceries
The same is true for +1/+1 counters