A Putrid Imp is the "best" discard outlet from a pure combo perspective
In Synchro-based strategies, this is especially good to make sure you can Synchro summon your main monsters easily
C Common Parry Knights X EARTH Level 6 [ WarriorEffect ] ATK 2300 DEF 2100 When you take battle damage from an opponent's attacking monster: You can Special Summon this card from your hand, then you can Special Summon 1 monster from your hand with ATK less than or equal to the damage you took
Whether you want oval, circular, square, rectangular, diamond, heart, or any other unique shape for playing cards, custom game cards are the go-to option
I would always choose other cards over this for these kinds of deck but would still happily run this if I had to