Impact of the Card Uncommon wants to be impactful for Limited, but usually is less so for Constructed, typically because those cards would cause problems for Limited
The Equipment costs four, is free in your opening hand, equips for three, and then gives trample and +1/+1 size too in addition to that double strike
You need fewer cards in the graveyard per activation (albeit more specific cards), it has the same activation cost, it will typically deal more than two damage per activation, it will get larger over time, and it has menace
Malcator won't count non-artifact permanents you controlled that became artifacts
Water Web Holofoil: The usual holofoil pattern from Sun & Moon to Cosmic Eclipse, meant to resemble flowing water waves
7 Binder Collection A Decent Placeholder Much like the corresponding Binder Collection from 151, this option appears promising on paper, but may fall short of your expectations in practice