Red tends to play up the offensive nature of first strike, while white plays up the defensive nature

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The MEGA is an 1115 inch oversized poster card think of it as a trading card scaled up to display size
Permanents that take away opponents' ability to execute Drannith Magistrate, Humility, Opposition Agent, Grand Arbiter Augustin IV, Narset Parter of Veils
However, you can use them to fuel the abilities of your permanents on the board, so they can be a powerful source of mana
Tons of LTR cards use the amass orcs mechanic, but there are a few I want to call out specifically