Disney history lesson aside, Basil is an interesting character, and this picture pretty strongly sums him up
Playing cards that need to pay LP is the strategy of the Deck, while gaining as little advantage as possible
Luckily, I have just such a spreadsheet created for you, updated for WAR
GR Gold Rare Downerd Magician X DARK Rank 4 [ SpellcasterXyzEffect ] ATK 2100 DEF 200 2 Level 4 Spellcaster monsters During your Main Phase 2, you can also Xyz Summon this card by using a Rank 3 or lower Xyz Monster you control as material
I'll let you know, I will protect myself from whatever you have planned. Feldon's Cane is an ultra-cheap artifact that lets you shuffle away your graveyard at any time, and the ultimate card in this category
It is most useful when your opponent has already built up a field full of monsters (5 monsters in the regular game, 3 monsters in Duel Links), and they're ready to beat your life points (LP) down to zero, or close to zero, that turn