The ability to find any equipment you want on turn two and be ready to play and attach it on turn three is already great, but Cloud has another ability: As long as he's equipped, all triggered abilities of his equipment and himself trigger an extra time
While Cavern of Souls feels like the biggest hit in the main set, Im also very excited about Growing Rites of Itlimoc and Resplendent Angel because these cards have crept up a lot in price over time
At the beginning of combat on your turn, put a +1/+1 counter on target creature you control
Side-loaders reduce that risk almost entirely
The core gimmick of the deck is its item cards, which can be banished to trigger increasingly powerful effects on other cards
And since each of those enchantments is also drawing you cards off your enchantress effects, you're pulling ahead on every axis at once