Trample

When Boldwyr Heavyweights enters, each opponent may search their library for a creature card and put it onto the battlefield. Then each player who searched their library this way shuffles.

Menace

At the beginning of your upkeep, tap Heavyweight Demolisher unless you pay .

Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Enchant creature

Enchanted creature can't attack.

Tap two untapped creatures you control that share a creature type: Exile enchanted creature.

Weight of Spires deals damage to target creature equal to the number of nonbasic lands that creature's controller controls.

When you unlock this door, manifest dread, then put three +1/+1 counters on that creature.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)