Planeswalkers in EDH are tough to evaluate but the tick up anthem ability is decent in a fliers deck
The gap reflects the additional rarity
This makes for a fundamentally riskier style of gameplay, as getting a rough starting draw (a gamble alleviated somewhat by the fact that the rules allow a redraw attempt) can make it difficult to get off the ground
Its a cheap and useful counterspell, and given the sheer amount of Legendary Creatures in most decks these days, its not the biggest deal to sometimes pay this additional cost
$0.69 Seafloor Oracle Rivals of Ixalan $0.99 Kopala, Warden of Waves The Lost Caverns of Ixalan Commander Decks $0.99 Master of the Pearl Trident The Lost Caverns of Ixalan Commander Decks $0.69 Deeproot Waters Ixalan $22.99 Merrow Commerce Lorwyn $0.59 Seafloor Oracle The Lost Caverns of Ixalan Commander Decks $0.69 Deeproot Waters The Lost Caverns of Ixalan Commander Decks $1.29 Kopala, Warden of Waves Ixalan $8.49 Vodalian Hexcatcher Dominaria United $0.69 Mist Dancer The Lost Caverns of Ixalan Commander Decks $4.49 Merrow Harbinger Lorwyn $0.69 Merfolk Sovereign The Lost Caverns of Ixalan Commander Decks 0 results found
An Aura put onto the battlefield this way doesn't target anything (so it could be attached to a permanent with shroud, for example), but the Aura's enchant ability restricts what it can be attached to