Faith vs Science DD challenge: Mechanics

pray: You gain 1 life for each creature you control. Used on 3 cards: Sunburst Elemental, Archbishop Mercellus, Wandering Hermit

Suitable for including in sentences.

Pray: PARAM1 :You gain 1 life for each creature you control. Used on 16 cards: Sacred Soil, Temple Caretaker, Seraph of the Devout, Blessed Elephant, Faith's Call, Sylvan Spiritualist, Sacred Scale, Selesnyan Altar, Reinforcement Clergy, Revered Troll, Witness of the Faith, Lonak Devotee, Young Monk, Parish Guardian, Harbinger of Avacyn, Knight of the Faith

This mechanic is supposed to be tied with "When you pray, [EFFECT]" triggers that will thus activate across multiple creatures.

Tinker: When this permanent enters the battlefield, you may sacrifice an artifact. Used on 16 cards: Gnomish Rocketeer, Junker Goblin, Massey, Engine Manager, Massey's Galvenizer, Machine Arbiter, Bounce Scrabbler, Master Exploder, Ogre Inventor, Scrapyard Sneak, Scrying Orb, Mechanical Kavu, Shoddy Mechanic, Cobbled Engine, Cogwork Bull, Quicksilver Manipulator, Scrap Sweeper

Exploit for Artifacts

Faith: You have faith when you cast this spell if you control an Angel or reveal one from your hand Used on 8 cards: Faithful Recruit, Final Apocalypse, Religious Awe, Pilgrim's Journey, Angelwing Shards, Unshakeable Belief, Angel's Rest, Hunt the Heretic

this is used as an alternate to the angel clause

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}()]".