Stacking Shield of thorns

[Graftonianman]

Can you stack the Shield of Thorns spell from the ghyran realm? Ie, cast it 3 times on the same unit to cause 3d3 MW to a charging unit? 

*the command ability for that realm specifically allows you to cast it multiple times

[Lucky Snake Eyes]

You can't cast the same spell more than once per hero phase, the only exception that I know of is LoN has a rule that if you roll a natural 9+ with certain spells the spell resolves twice.

[Choombatta]

Outside of Match Play games, cast it as many times as you want.

[Glazer]

9 hours ago, Choombatta said:

Outside of Match Play games, cast it as many times as you want.

The restriction on casting a spell only once per turn is a core rule now, so applies in all games: 'You cannot attempt to cast the same spell more than once in the same turn (even with a different wizard).' (Core rules page 8, Casting Spells).

However, the 'Command the Land' command ability from the Realm of Ghyran realm rules overrides this restriction, allowing you to cast the spell multiple times as long as you have enough command points to do so, including in Match Play games.