Equipped creature has defender and ", : Other creatures you control gain trample and get +X/+X until end of turn, where X is this creature's power."
Equip

Gargantuan Dragon, Challenge 17
Armor class 20, Hit Points 341
Speed 20 ft., swim 40 ft.
Attacks Bite, Claw, Tail, Steam Breath
STR 25 (+7) DEX 10 (+0) CON 20 (+5)
INT 10 (+0) WIS 12 (+1) CHA 12 (+1)

: Add .
, : Until end of turn, target creature gains "Whenever this creature deals combat damage to a player, create a Treasure token."

Equipped creature gets +2/+2 and has hexproof from monocolored.
Equip . This ability costs less to activate for each color of the creature it targets.

As long as you control a Dragon, this creature gets +1/+1 and has flying and trample.

Whenever a player casts a red spell, you may gain 1 life.

Whenever a Dragon you control enters, put a gold counter on this artifact.
, Remove a gold counter from this artifact: Draw a card.
: Add one mana of any color.

This land enters tapped unless you control a Swamp or a Mountain.
: Add or .

Each Dragon you control enters with an additional +1/+1 counter on it.
: Add one mana of any color.

When this artifact enters, conjure Dragonweave Tapestry's spellbook into your library twice, then shuffle.
Whenever you cast a Dragon or Omen spell, draw a card.
: Add one mana of any color.

Dragonweave Tapestry's spellbook includes the following cards:
• Purging Stormbrood
• Twinmaw Stormbrood
• Runescale Stormbrood
• Disruptive Stormbrood
• Whirlwing Stormbrood

: Add or .

When this creature enters, for each kind of counter on target permanent, put another counter of that kind on it or remove one from it.

: Add .
, : Put two +1/+1 counters on target non-Human creature that entered this turn.