After that every Elf is card draw and more mana
And then, once its been used up, it gives you not an insignificant amount of life gain
Varragoth, Bloodsky Sire Boast is a new keyword that rewards you for attacking with creatures regardless of whether they deal damage
Wake Thrasher gets infinite power with Tidewater Minion and Aphetto Alchemist, (while all the cards are listed, the combo isn't) Filigree Sages makes infinite mana with Prismatic Geoscope Worldgorger Dragon makes infinite mana with Kiki-Jiki, Mirror Breaker (again cards are there combo isn't) Seedcradle Witch makes infinite mana with Bloom Tender Palinchron makes infinite mana with Mana Flare and Heartbeat of Spring Aetherwind Basker makes infinite energy and combat steps with Lightning Runner Reality Spasm makes infinite mana with Meletis Charlatan, Echo Mage, Reiterate, Mischievous Quanar and probably a bunch of other cards I can't remember.
For example a 3/3 vanilla dork could normally block a 2/2 first strike and then slay it
Please be advised, this Commander deck building template is mainly a starting point and some guidelines