The extra modes Riku provides are impulse draw, a +1/+1 counter and trample until end of turn, and a 1/1 blue Bird creature token with flying
With or without fetchlands, competitive or casual, these are the ultimate balance of risk and reward in Magic resource production
The planeswalkers themselves are all newer characters, which is a bit disappointing due to Commodore Guff being from the novels around Invasion that feature the 9 Titans
But youre still restricted to a single card type
Heres an example of the kind of deck that got Mind Twist banned: Creatures (2) Lands (21) Spells (37) 4 Mana Drain 2 Counterspell 4 Swords to Plowshares 1 Sol Ring 1 Regrowth 1 Mind Twist 1 Demonic Tutor 1 Braingeyser 1 Time Walk 1 Ancestral Recall 2 Red Elemental Blast 1 Jayemdae Tome 2 Disrupting Scepter 4 Disenchant 1 Recall 2 Moat 1 Mirror Universe 1 Timetwister 1 Black Lotus 1 Mox Emerald 1 Mox Jet 1 Mox Pearl 1 Mox Ruby 1 Mox Sapphire Thats right, one of the most famous, most influential decks of all-time, The Deck, was a Mind Twist deck until Mind Twist was banned
All together, this is a worthwhiile battle to include, even if Gobakhan probably doesn't have many dragons