Equip is usually written as equip X:, and a player can pay the cost (X) any time they could cast a sorcery to attach the equipment to target creature they control
6 Karmic Guide, Reveillark, and Phyrexian Altar Infinite mana is about as un-white as you can imagine, and yet it does have a pretty great combo available to it
Shadrix Silverquill Shadrix Silverquill is a big, fun, toolbox dragon that can synergize well here
Also, if you have a way of popping Creatures prior to combat, you get to draw those cards right away
On one hand, I'm glad they're making Mew more accessible for players while still not putting 4 Mew Vs and 4 Genesect Vs in, but at the same time, its Mew Vmax
Borderland Behemoth is another red Giant, but this time its a seven mana 4/4 with trample