Standard has plenty of all three of those at the moment, so Barricade is a solid answer to bring in from the board
The biggest standouts though are the artifacts, Radiant Lotus and The Aetherspark
They often have abilities allowing them to return from the graveyard, create artifact tokens, and manipulate resources, making them ideal for strategies focused on attrition and long-term value
This white vampire disrupts hands relying on mana rocks to curve out and open the door to aggressive attacks you wouldnt have if they had blockers
Thankfully, however, for those looking to jump straight with one of MTGs best commander decks, some of these legends stand head and shoulders above the others
Bruenor Battlehammer is my pick because it balances the power of some cost reduction without being too much of a kill-on-sight commander