M:tG card similarity search
| Name | Mana | Type | Text | 
|---|---|---|---|
| Propaganda | 2U | Enchantment | Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you. | 
| Vigean Hydropon | 1GU | Creature — Plant Mutant | Graft 5 (This creature enters the battlefield with five +1/+1 counters on it. Whenever another creature enters the battlefield, you may move a +1/+1 counter from this creature onto it.) Vigean Hydropon can't attack or block. 0/0 | 
| Sightless Brawler | 1W | Enchantment Creature — Human Warrior | Bestow {4}{W} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.) Sightless Brawler can't attack alone. Enchanted creature gets +3/+2 and can't attack alone. 3/2 | 
| River Serpent | 5U | Creature — Serpent | River Serpent can't attack unless there are five or more cards in your graveyard. Cycling {U} ({U}, Discard this card: Draw a card.) 5/5 | 
| Deep-Sea Terror | 4UU | Creature — Serpent | Deep-Sea Terror can't attack unless there are seven or more cards in your graveyard. 6/6 | 
| Song of Serenity | 1G | Enchantment | Creatures that are enchanted can't attack or block. | 
| Archangel of Tithes | 1WWW | Creature — Angel | Flying As long as Archangel of Tithes is untapped, creatures can't attack you or planeswalkers you control unless their controller pays {1} for each of those creatures. As long as Archangel of Tithes is attacking, creatures can't block unless their controller pays {1} for each of those creatures. 3/5 | 
| Deep-Sea Serpent | 4UU | Creature — Serpent | Deep-Sea Serpent can't attack unless defending player controls an Island. 5/5 | 
| Sea Monster | 4UU | Creature — Serpent | Sea Monster can't attack unless defending player controls an Island. 6/6 | 
| Hammerhead Shark | 1U | Creature — Shark | Hammerhead Shark can't attack unless defending player controls an Island. 2/3 |