If you have a repeatable ability to cause discard you always do it at a sorcery speed
Its not the case that the second action ability replaces the first one, the controller can use one or the other
"Three Rings for the Elven-kings under the sky, Seven for the Dwarf-lords in their halls of stone, Nine for Mortal Men doomed to die These feature the language of the High Elves, Quenya, in Tengwar letterforms
We're replacing the one-drops with Robin Hood - Beloved Outlaw, a great shift target for Robin Hood, Sneaky Sleuth that also synergizes with some of our new Robin Hood-centric cards , Robin's Bow and Sherwood Forest, Outlaw Hideaway
The only real trick here is that in order to get that all important haste and sneak that first attack in, you need to be almost empty handed, which can be challenging if you're putting a lot of big legends in your deck
Namaari Single-Minded Rival is a 5-cost Character with a 0|5 stat line that might look weak at first glance