(If they're equipped to the same creature, the abilities of the equipped creature will also trigger three times.) An ability of the equipped creature that triggers when a card is put into a graveyard "from anywhere" triggers twice only if (a) a creature card was put into a graveyard from the battlefield and (b) The Masamune is still on the battlefield and attached to the creature with the relevant ability
The aim of the game here is to fuse your normal heroes together into powerful monsters that can conquer the battlefield
Little synergies can make a big difference and you should always be looking for ways to combine two cards together to get more value out of your turns
Knightmare Cerberus Type Link Monster Attribute EARTH Typing Fiend ATK 1600 LINK 2 Archetype Knightmare Typings Link / Effect TCG Date 2018-05-03 OCG Date 2018-01-13 Card Text 2 monsters with different names If this card is Link Summoned: You can discard 1 card, then target 1 Special Summoned monster in your opponent's Main Monster Zone
Also, if you combine the borderless art for all of the multiverse cards, including the scene cards for the likes of Miles Morales and Gwen Stacy, you'll find it turns into a cool little action scene
As such, your opponent typically needs to attack or block with the lifelink creatures whenever they want to gain life