Enclave Block - Chasm: Mechanics

Flanking: Whenever this creature becomes blocked by a creature without flanking, the blocking creature gets -1/-1 until end of turn. Used on 0 cards:

This mechanic is used primarily on mounted creatures to signify their supremacy in combat.

Formation: Whenever this creature declares an attack, you may tap any number of non-attacking creatures you control. this creature gains +1/+1 for each tapped creature until end of turn. Any damage dealt to this creature can be distributed by your opponent to any creatures tapped with this ability. Used on 0 cards:

This mechanic represents creatures forming up into squads for the attack, greatly enhancing their power.

Champion a <type>: When this card comes into play, sacrifice it unless you exile another (type) you control. When this card leaves the battlefield, that card returns to the battlefield. Used on 0 cards:

Fortify: PARAM1: Attach to target land you control. Fortify only as a sorcery. This card comes into play unattached and stays in play if the land leaves play Used on 1 cards: Mana Pump

Fortifications play a big role in Enclave.

In card text or details pages, write the mechanic's code name (playtest name) between square brackets, like "[Crittercast]", "[Bushido 1]" or "[Delay 4 {2}{R}{R}]". It will be expanded to the mechanic's name plus reminder text, such as "Suspend 4 – {2} {r} {r} . (Rather than cast this spell from your hand,...)"
To expand a mechanic's name but not its reminder text, include parentheses at the end of the square brackets: "[Crittercast()]", "[Delay 9 {R}()]".