Those cards are so borderline on power level that I can let the Banned and Restricted list decide their relevance for me
Putting the deck together requires you to determine how your mana will be able to cast spells and summon creatures, so limiting yourself to two or three colours is a good place to start
In Standard, it works as a control finisher alongside counterspells and tempo tools
Cards like Elven Ambush double your creature count, while Lys Alana Huntmaster makes your Elf creature spells a two-for-one, giving you an Elf token every time you cast an Elf card
Theres still a chance that Lulu cools down before Edge of Eternities, however, so a patient player may be able to get her for a bit cheap
To do this, commons like Goblin Medics (which deals 1 damage to any target whenever its tapped) and even Village Bell-Ringer (who has flash, and untaps all creatures you control when it enters the battlefield) will keep you from feeling like you're wasting all your creatures as, effectively, an alternate mana source