You must also Tribute monsters from your hand or field, and/or banish Fusion or Synchro Monsters from your GY, whose total Levels equal or exceed the Level of the Ritual Monster you Ritual Summon, then, if both "White Knight of Dogmatika" and "White Relic of Dogmatika" are on the field, you can look at either your Extra Deck or your opponent's, and send 1 monster from it to the GY
Special Summon it, also send the other excavated cards to the Graveyard
Baneslayer is such an iconic design that some of what makes it great was lifted to Lyra Dawnbringer in Dominaria
For Pikachu on the other hand, Im not too sure in which order to put the rest
Finally, you have on-demand removal if you need it in the late game
To illustrate, here are all three editions from the Base Set, back-to-back: The last set worth mentioning from this era is Base Set 2