Some cards enchant a creature and add a +1/+1 counter, so these are a good starting point
We can run the Balefire Liege and tragically underplayed Mindwrack Liege pair (yes, theyre Horrors
Enchantments that tax the actions of the opponent's permanents Another offshoot of the last two categories is an enchantment (often an Aura but not always) that restricts the use of a permanent (most often a creature but not always) unless the opponent pays a tax (most often mana but not always)
If Kronk wouldnt be in the pack, then my top options would be Grumpy - Bad-Tempered, Felicia - Always Hungry, Grand Pabbie - Oldest and Wisest and Rapunzel - Sunshine
Each card is available in a non-foil and foil treatment
This is obviously at its best when youve got loads of coin flips going on, but it can be a one-hit-KO all on its own if youre lucky