In my opinion, Valkyrie is one of the most difficult tiles to play.
after I played one at the begining of a row at the end of the row, another player will very likely play the second walkyria
But you can add another one to that same row. Example:
Fenrir / Loki / DragonYour turn:
Valkyrie / Fenrir / Loki / Dragon (you score 4 points; Fenrir and Dragon have a power of zero, Loki a power of 1, so you beat them with your Valkyrie-power)Opponents turn:
Valkyrie / Fenrir / Loki / Dragon / Valkyrie (he scores 5 points)Your turn:
Valkyrie / Fenrir / Loki / Dragon / Valkyrie / Valkyrie (you score 6 points)
By the way, players can end such a cycle easily for example by playing a troll.
or play a tile just after mine, thus it will not be at the edge any more.
You have to play it tactically, so you'll always have an option left, which is easier in a 2 player game than in a 3, 4 or 5 player game.
Fenrir OdinYour turn:
Dragon Valkyrie (you don't score)
In a 2 player game, you'll always have an option: left of the dragon or below Odin. In a 3, 4 or 5 player game, it will depend on the tactics of the players: are they going for their own success and choose THEIR best option, or are they going to thwart you, see through your plans and try to block you.
But yes, of course, Valkyrie is much more difficult to play than Odin for example :-)