Rider, Tamer of Wyverns

Rider, Tamer of Wyverns enters the battlefield with Kinship at 0.

Rider, Tamer of Wyverns can only saddle a creature when Kinship is at 100.

When Rider, Tamer of Wyverns saddles a creature, that creature gets +5/+5 and gains trample and indestructible until end of turn and Kinship is reset to 0.