As long as the creature that attacked enlisted a creature this combat, when Aradesh's last ability resolves, the creature that attacked will still get double strike, and if that creature's power is 4 or greater, you'll still draw a card
Finally, you can pay three loyalty to give a Creature -3/-3 perpetually
If you know your foe's deck is runs Fatal Push, Cut Down, and Go for the Throat, then only Fatal Push is useful against your Roaming Throne
Mystic Reflection can create copies of plenty of useful creatures, from Skyclave Apparition and Solemn Simulacrum to tribal-synergy supporters
Every creature chips away at opponents life totals, which makes wide board states lethal without ever needing to attack and forces tables to answer it quickly or lose
Though this Ajani's +1 is rather lackluster, only gaining you three life, its -2 more than makes up for it, bolstering your entire board by putting +1/+1 counters on each of your creatures and loyalty counters on each of your Planeswalkers