mtg from the vault relics card list I found some old 👀 : r/mtg Magic: The Gathering - From

Hermetic Study/Psionic Gift ( Saga/Legacy/Destiny & Odyssey/Torment/Judgment ) In both sets, these cards served a similar purpose: kill small creatures or allow your smaller creatures to threaten large ones in combat (for instance, Hermetic Study would allow your 2/2 creature to attack into a 3/3 creature with the threat of your third Hermetic Studied creature sweeping away the 3/3 should it block)

(2023-02-04) If more than one creature with toxic deals combat damage to a player at the same time, those counters are placed as a single event, and the ability triggers one time

Beyond that there's only a few other strong Knights I'd recommend: Invasion of New Phyrexia, Battle Angels of Tyr, Cavalier of Dawn, that's pretty much it

The classic

Whenever you get any one of these eight new cards or four non-foil Commander cards in your Set Booster, you will have gotten at least two rares in that booster

For Clerics, Aerith Gainsborough and Rosa, Resolute White Mage are the obvious choices