Felidar Retreat can land as early as turn three with
Utopia Sprawl and still give value when it lands if we have Enchantress Presence by drawing cards. Not to mention Sythis,
Generous Visitor, etc. The ability to keep creating threats when we drop a land is very helpful, especially against control since the landfall is uncounterable. This card, while the upper top end of the curve, still feeds our aggro strategy while giving us long term value and preventing us from having any dead draws for a grindy match.