mtg whenever an opponent discards a card Megrim - Ninth Edition #144 (English) Momentum Breaker | Aetherdrift |

Leyline of Sanctity protects us from targeted discard or burn spells that can disrupt our hand or kill us

Now, a lot of these cards will be best in an Assassin deck where you can really rely on satisfying that freerunning ability

Foretell lets you exile the card from your hand to cast it for an alternate cost later

If you are jamming a few Eldrazi Titans and don't want to wait ten turns to cast them, you can power them out on turn six or so with the right ramp package

The final picture is the important one

As a bonus, there's a good chance all that Snow mana you pour into Blood on the Snow will revive one of your own fallen troops