I'd like haste in this color to push to the Top Five, but it's still good at casual play just based on size and abilities and upkeep trigger
While Ocelot Pride is still in the lead for now, it may not last that way for long
Theres the other side of the coin regarding the Ruby/Sapphire match-up, where they get to focus on ramping cards and rely on their powerful top decks
Legendary creatures you control get +2/+2.
As an example, heres a Power 9 Series winning list of Brian DeMars, using every one of those cards alongside his playset of Thoughtseize: Creatures (2) Lands (16) Spells (42) 1 Sensei's Divining Top 1 Tendrils of Agony 4 Brainstorm 1 Fastbond 2 Mana Drain 1 Vampiric Tutor 1 Mystical Tutor 1 Yawgmoth's Will 1 Duress 4 Force of Will 1 Demonic Tutor 1 Time Walk 1 Ancestral Recall 4 Gush 1 Mind's Desire 4 Merchant Scroll 1 High Tide 1 Chain of Vapor 1 Black Lotus 1 Lotus Petal 1 Mox Emerald 1 Mox Jet 1 Mox Ruby 1 Mox Sapphire 1 Empty the Warrens 4 Thoughtseize Theres even a Fastbond plus an Ancient Grudge in the sideboard, so it doesnt really count as a Grixis deck!
The first was Ruby Leech, which tends to find its way onto lists of "worst cards of all time" since it makes all your other Red spells cost an additional red mana