Constructs generally want other constructs so here are some solid ways to construct constructs, with both commanders and non-commanders: Urza, Chief Artificer, Mishra, Eminent One, Vihaan, Goldwaker, Dollhouse of Horrors, Digsite Engineer, and Simulacrum Synthesizer
In fact, if you draw a copy of Grizzly Bears to start your turn, it is considered a creature card while in your hand, a creature spell while briefly on the stack, and then a creature permanent once its on the battlefield (and itll go back to creature card once it moves to your graveyard or exile zone
Aggressively attacking your opponent's life total can limit your opponent's options
This will be a negative for decks with payoffs that specifically want you to draw cards, but on the other hand your foes won't be able to target your draws