If youre new and feel intimidated by not knowing the most powerful cards, just go with your gut and pick the cards or abilities that appeal to you - even if thats just choosing your favourite Disney characters
That's not true of MTG Modern Horizons sets, however, which feature reprints and brand-new cards being made specifically to enter the Modern format (and beyond, into Legacy and sometimes Vintage)
Overrun and Finisher Spells An army of tiny 1/1s can look harmless until you cast something like Craterhoof Behemoth
A card only cares about its specific printing
Its enter-the-battlefield effect to deal five damage to a creature directly feeds into the other effect relating to excess damage
Though she has a cost of 7 Ink, Clarabelle is a Floodborn character, which means that she has the Shift keyword, allowing her to be played directly on top of another Clarabelle card, for a reduced cost (in a manner reminiscent of how evolving works in Pokemon)